1000 Sentences With "depth charge" | Random Sentence Generator

It mounted a huge "mortar" that fired 380-millimeter rocket projectiles adapted from a naval depth-charge system.

Danish divers who recently visited the site observed open hatches, shattered glass in the periscope, and severe destruction below the tower where the depth charge struck.

Another hypothesis was that it was sunk by a depth charge, an explosives-filled canister dropped from the stern of a ship to destroy a submarine.

But before it could carry out its orders, the U-581 was spotted by the British destroyer Westcott and hit by a depth charge near the island of Pico.

"When his songs got out and people saw who he was and what he was writing, it was like a depth charge for songwriters in Nashville," Rosanne Cash says.

Should the player be 'unsettled' by the attempts to keep him, however, chances are said submarine will be hit with a contractual depth charge before it can 'torpedo' his efforts to escape.

The world changes now upon us are irrefutable evidence that the visions of the elders were no mere superstition, but an intuitive depth charge from the deepest part of the human psyche.

Vows Though Cupid appears in many guises it is safe to say he has seldom taken the form of a hard-boiled, deep-fried, sausage-wrapped cholesterol depth charge called a Scotch egg.

The Romanian New Wave sounded its first major depth charge when The Death of Mr. Lazarescu screened at Cannes in 2005 as part of the festival's Un Certain Regard, winning that section's top prize.

He took out Roufus with some depth charge leg kicks in Round 4, and didn't have to sleep with any fishes at the bottom of the Chao Phraya River when he returned home to Bangkok the following week.

In a run of records at the tail-end of the 93s, Kompakt Records co-founder Wolfgang Voigt laid out a strange and strangely enduring model: depth-charge rumblings combined with textures that alternate between crystalline clarity and scabrous static.

Over the past decade, the words "trauma" and "traumatic" have been used so profligately and have entered our cultural discourse to such an extent that they have almost lost their depth-charge, the reactive implosion of psychic damage to which they were originally meant to refer.

Dietary changes, too, hastened the demise: the contemporary consumer who is far more likely to thumb-tap an order for a Tingly Sweet Potato Kelp Bowl from Sweetgreen than to pull up to a Burger Heaven counter for the caloric depth charge that is a cheeseburger deluxe.

Today the acoustic, plastic, toxic pollution and strikes by ships are endangering whales everywhere worldwide, but if humanity can create the reserves necessary, if it can recognize the sanctity of whales in time it will salvage the depth charge of consciousness the whales represent to the oceans.

Editorial Over the past two months, as the nation has watched a new president drop one depth charge after another — banning Muslim refugees; ordering the demolition of broadly accepted rules protecting air, water and American consumers; flouting conflict-of-interest and other ethical standards honored by his predecessors in office — Americans have looked to the courts, the one aspirationally nonpartisan branch of government left to them, to stop him.

The Mk11 or Mk 11 Depth Charge is a depth charge used by Lynx Wildcat or Merlin Mk2 helicopters to attack enemy submarines.

Algerine had four single mounts for Oerlikon 20 mm autocannon, and she was fitted with two depth charge rails, and four depth charge throwers.

US WW2 Mark IX depth charge. Streamlined and equipped with fins to impart rotation, allowing it to fall in a straight trajectory with less chance of drifting off target. This depth charge contained of Torpex. A depth charge is an anti-submarine warfare (ASW) weapon.

The class later received two depth charge throwers and one depth charge rack. The vessels had a complement of 88 in peacetime and maximum 106 during war.

A frequent modification was replacing the aft 4-inch gun with the 3-inch gun to make more room for the depth charge tracks. Anti-submarine (ASW) armament was added during or after construction. Typically, two depth charge tracks were provided aft, along with a Y-gun depth charge projector forward of the aft deckhouse.Friedman, p.

Additional 40 mm guns were added amidships along with 20 mm weapons. In most ships, four K-gun depth charge throwers were added to augment the as-built pair of depth charge racks.

This was supplemented by three single 18 inch (450 mm) torpedo tubes and three .303-inch machine guns. Later in the ship's career, two depth charge throwers and four depth charge chutes were installed.

Originally the ship was armed with one Mk.26 /50 caliber dual purpose gun, three twin Mk.1 Bofors 40 mm guns, four Mk.10 20 mm Oerlikon guns, 1 Hedgehog depth charge projector, four depth charge projectiles (K-guns) and two depth charge tracks.NavSource Online: Patrol Craft Escort Photo Archive. PCE-881 . This configuration applies before its overhaul in the early 1990s.

U-47 spent the next hours submerged under persistent depth charge attack.

303 inch machine guns (a mix of Lewis and Maxim guns), six 21-inch torpedo tubes (in two triple mountings), two depth charge chutes, and four depth charge throwers. By 1941, two of the 4.7-inch guns had been removed, five 20 mm Oerlikon anti-aircraft guns and a Breda gun had been fitted, and the depth charge chutes were replaced with depth charge rails. A year later, a third 4.7-inch gun was removed, along with two of the Oerlikons, the .303-inch guns, the Breda gun, and the torpedo tube sets.

Citation: > For extraordinary heroism while serving on board the U.S.S. Remlik, on the > morning of 17 December 1917, when the Remlik encountered a heavy gale. > During this gale, there was a heavy sea running. The depth charge box on the > taffrail aft, containing a Sperry depth charge, was washed overboard, the > depth charge itself falling inboard and remaining on deck. MacKenzie, on his > own initiative, went aft and sat down on the depth charge, as it was > impracticable to carry it to safety until the ship was headed up into the > sea.

Originally the ship was armed with one forward Mk.26 /50 caliber dual purpose gun, three aft twin Mk.1 Bofors 40 mm guns, four Mk.10 20 mm Oerlikon guns, 1 Hedgehog depth charge projector, four depth charge projectiles (K-guns) and two depth charge tracks.NavSource Online: Patrol Craft Escort Photo Archive. PCE-891 . This configuration applies before its overhaul in the early 1990s.

Forty-eight men died in the depth charge attack; there were no survivors.

Early in the war, depth charge stowage increased to 44.Friedman, pp. 236–237 By 1943, only four ships were still afloat and all had the 'Y' gun on the quarterdeck removed to allow for additional depth charge stowage and two additional depth charge throwers. The 12-pounder was removed to allow for the installation of a Huff-Duff radio direction finder on a short mainmast and for more depth charges.

Though she scored no definitely provable successes against German submarines, the destroyer made depth charge attacks on four separate occasions in July and a gunfire attack in one other instance. The first two depth-charge attacks, on 10 and 11 July, returned no results whatsoever, and the gun attack on 20 July was similarly unrewarding. However, after sighting a double periscope the following day, Wadsworth made another depth-charge attack.

Nine Hiburi-class (日振) or Modified Type B ocean defence ships were commissioned between June 1944 and April 1945. Two further vessels were never completed. They displaced 940 tons (full load) and carried three 4.7 in (120 mm) guns, two depth charge projectors, six depth charge throwers and up to 120 depth charge. The nine ships of the Hiburi class served as convoy escorts during World War II.

The payload ranges from a simple depth charge to a 200 kt thermonuclear warhead.

During that time, she made several sonar contacts but made no depth charge attacks.

Twenty-two Ukuru- class (鵜来) or Modified Type B ocean defence ships were built but the last two were never completed. The other twenty commissioned between July 1944 and April 1945. These numbers exclude nine completed and two uncompleted ships which were built to the Hiburi sub-class design. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns, 4 (later 16) 25mm (0.98 in) AA machine guns, 16 depth charge throwers, two depth charge projectors, two depth charge chutes, up to 120 depth charge and one 81 mm (3.2 in) mortar.

After an initial hedgehog and depth charge run a final depth charge run was commenced and shortly after small explosions and bubbles were observed. I-370 was lost with all 84 officers and men aboard as well as all Kaitens and pilots.

Two torpedo tubes were fitted in a single twin mount, while two depth charge chutes, four depth charge throwers and 70 depth charges comprised the ship's anti-submarine armament. Type 291 and Type 285 radars was fitted, as was a Type 128 sonar.

Anti-submarine armament consisted of two Hedgehog forward with depth charge projectors and racks aft.

117 The ship was fitted with two depth charge throwers and one rack for 20 depth charges.

Seal evaded depth charge attacks by the escorts and the remainder of the convoy reached Otaru safely.

Photographs show that these were augmented during World War II by four K-gun depth charge throwers.

117 The ship was fitted with two depth charge throwers and one rack for 20 depth charges.

Two depth charge racks and up to six K-gun depth charge throwers were carried. In place of the torpedo mounts, four davit-mounted LCPLs (Landing Craft Personnel, Large) were shipped. Later, the LCPLs were replaced by a version with a bow ramp, the LCPR (Landing Craft Personnel, Ramped).

He therefore motored Lolita stern first to the submarine where he rolled a depth charge off the stern and sped away to avoid the explosion. However, there was no explosion. Realising the water was too shallow, members of the crew attached floats to the second depth charge to slow its rate of descent so as to trigger the fuse. Having done so, Anderson again manoeuvred Lolita stern first to the submarine and rolled the second depth charge into the water.

124–25 The ship was fitted with four depth charge throwers and two racks for 70 depth charges.

Slater was refitted several times during her long service with two navies. One of her depth-charge racks and four "K-gun" depth charge launchers have been removed. Two twin Bofors 40 mm guns have been added, and the ten single 20 mm guns have been replaced with nine twin mounts.

Two 21 inch (530 mm) torpedo tubes were fitted in a single twin mount, while two depth charge chutes, four depth charge throwers and 70 depth charges comprised the ship's anti-submarine armament. Type 291 and Type 285 radar was fitted, as was Type 128 sonar.English 1987, pp. 12–13.

The destroyer's primary armament consisted of three QF 4-inch Mark IV guns. These were supplemented by a 2-pounder pom-pom, five .303 inch machine guns (a mix of Lewis and Maxim guns), two twin 21-inch torpedo tube sets, two depth charge throwers, and two depth charge chutes.

For anti-submarine warfare, the destroyers were given two depth charge racks, four depth charge throwers and equipped with sonar. In 1966 a Sea Cat missile system was fitted to Mariz e Barros, with the destroyer used as a test platform. The system was later removed and installed on the .

Depth Charge died in 1965, at Shamrock, Texas. He was inducted into the AQHA Hall of Fame in 1991.

Whitley, p. 117 The ship was fitted with two depth charge throwers and one rack for 45 depth charges.

30 Lewis MGs. Tulsa later had a depth charge rack installed, giving her some manner of anti- submarine capacity.

Eight Lewis guns comprised the ship's anti-aircraft armament. Anti-submarine armament was relatively heavy for the time, with a load of 40 depth charges, launched by two depth charge throwers and two depth charge chutes,Friedman 2008, pp. 83–84. with Type 124 Sonar fitted in a retracting dome.Brown 2009, p. 164.

Unfortunately the depth charges had been ordered to be set to 100 feet and due to the shallow water it failed to detonate. He again manoeuvred to the submarine and dropped a second depth charge which also failed to explode. As he manoeuvred Lolita to drop a third depth charge, at approx.

Southard immediately slowed to and opened fire. I-172 submerged, and Southard commenced her first depth-charge attack. Southard lost contact with I-172 and did not regain it again until 06:07, almost three and one-half hours later. Over the next three hours Southard made five more depth-charge runs.

Hogan Index to Stakes Winners Volume 2 p. 410 Depth Charge was a year younger than his famous half brother.

Whitley, pp. 124–25 The ship was fitted with four depth charge throwers and two racks for 70 depth charges.

As a convoy escort, Cowichan was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

Finally a depth charge that was fired at Egerland amidships, finally sank the ship at 1530hours on 5 June 1941.

As a convoy escort, Wasaga was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

As a convoy escort, Malpeque was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

As a convoy escort, Bellechasse was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

Depth Charge was a registered Thoroughbred son of Bold Venture. His dam was a mare named Quickly, a descendant of The Tetrarch and the imported to the United States stallion Rock Sand. Depth Charge was bred by John D. Hertz. Quickly was also the dam of Count Fleet, a U. S. Triple Crown winner.

303-inch Maxim gun, two .303-inch Lewis guns, and three revolving torpedo tubes for 18-inch torpedoes. Four depth charge chutes were installed in 1917, although two were later removed in 1919. Two depth charge throwers were added during a 1918 refit; at the same time, one of the torpedo tubes was removed.

Lust 2 is the third album by Depth Charge, and alias of UK producer Jonathan Saul Kane. It was released only a month after Lust and was originally conceived as a remix companion to the previous album. To date, Lust 2 is the last full-length studio album recorded under the Depth Charge name.

II, pp. 412, 417 On 11 January 1916 Blonde and the Flotilla leader were on patrol east of Scapa Flow when a depth charge carried by Blonde accidentally exploded, damaging her upper deck and killing two of her crew. The accident resulted in the type of depth charge carried by Blonde, the Egerton Depth Charge, being withdrawn from use by the Grand Fleet.Naval Staff Monograph No. 31, p.51. The ship was under refit in April 1916 and missed the Battle of Jutland on 31 May–1 June 1916.

Marlean was consumed by fire and the explosion of a depth charge at Obelisk Bay, Sydney Harbour on 12 November 1944.

In front of the convoy at the destroyer Faulknor, received an Asdic echo and destroyed with its first depth charge salvo.

The submarine was hit first by a depth charge and finally by a Mark 24 mine. All 129 hands were lost.

The advent of more effective weapons, such as Squid and the Mk X depth charge also made the barrage less necessary.

ASROC could also launch a nuclear depth charge. On 11 May 1962, tested a live nuclear ASROC in the "Swordfish" test.

He didn't waste any time ordering Quartermaster Price to call general quarters. After general quarters sounded Cdr. Weatherwax ordered depth charge runs. Quartermaster Price was logging into the ships log that "Rancher" was making depth charge runs on a submarine, when the Captain checked the log and ordered Price to strike the word submarine from the log.

The three surviving members of the class, Ierax, Panthir and Aetos underwent further modifications. The aft bank of torpedo tubes was replaced by a high-angle gun. Their 4-inch guns were reduced to three, with the 'X' and 'Y' mounts landed for increased depth charge storage. The aft-most gun was replaced by four depth charge throwers.

Anti-submarine armament consisted of two Hedgehog anti-submarine mortars, supplemented by eight depth charge mortars and two depth charge racks. Sensors consisted of SPS-5B surface search radar and QHBa sonar. Displacement increased to standard and full load. The four ships still under construction completed in 1959–1960, with Atrevida converting to the revised standard in 1960.

Close-in anti-aircraft armament consisted of two quadruple Vickers .50 machine gun mounts. Both sets of torpedo-tubes were removed, allowing a heavy depth charge armament, with 112 depth charges carried, with sufficient depth charge throwers and racks to allow 14-charge patterns of charges to be used. Type 286 radar and Type 133 Sonar was fitted.

The ship's anti-aircraft armament may have been supplemented by two Bofors 40 mm guns. Two torpedo tubes were fitted in a single twin mount, while two depth charge chutes, four depth charge throwers and 70 depth charges comprised the ship's anti-submarine armament. Type 291 and Type 285 radars was fitted, as was Type 128 sonar.

Early in the war, depth charge stowage increased to 33 in the C class, while the D class carried 38.Friedman, pp. 236–37 'Y' gun on the quarterdeck was removed on many ships to allow for additional depth charge stowage as was the 12-pounder. On at least one ship, this latter gun replaced 'X' gun.

They pressed home a depth charge attack when the submarine dived, and were rewarded at 04:10 with another great underwater explosion.

Their armament comprised one single 3-inch/50 caliber gun mount, two 20 mm anti- aircraft guns and two depth charge projectors.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried.

Adding depth charge racks on the deck, ASDIC below, and a or gun in the bow equipped the trawler for anti-submarine duties.

The submarine's crew heard an explosion. An intense depth charge attack followed. Ray escaped after sunset. The submarine ended her patrol at Fremantle.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried.

46 Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried.

The Ukuru-class was equipped with the Type 22 and Type 13 radar. The Ukuru class was initially armed with 120 depth charges with two Type 94 depth charge projectors, sixteen Type 3 depth charge throwers and two depth charge chutes at the stern. The ships were provided with a Model 93 sonar and a Type 93 hydrophone; later units received the Type 3 Model 2 sonar, and some would later receive an trench mortar. Initially, the class retained capacity as a minesweeper, and was equipped with two paravanes; however, this was removed soon after completion.

The depth-charge throwers were removed in 1936 and more 200-kilogram depth charges were carried in their place. The Navy reconsidered its anti-submarine warfare tactics after the war began in September and intended to reinstate the depth-charge throwers, although these were an older model than the one previously installed; Cassard received hers in May 1940 at Toulon. Her depth charge stowage now consisted of 24 heavy depth charges and 16 of the 100-kilogram ones. At the same time, a pair of Browning 13.2-millimeter AA machine guns were installed on the quarterdeck.

The ship was armed with a single Mk IX naval gun, two depth charge throwers and two depth charge rails, and could carry 40 depth charges. Ships of the class were also initially equipped with one 2-pounder () "pom-pom" autocannon and two twin machine guns. Later in the war, they received two additional depth charge throwers and their capacity was increased to 70 depth charges. The machine guns proved inadequate as anti-aircraft (AA) weapons, and were replaced by heavier guns. In 1944, Mallows AA armament included a total of six single Oerlikon cannons, and one 2-pounder"pom-pom".

As U-68 began to sink, Campbell steered Farnborough over U-68s location and dropped a depth charge that blew the bow of the submarine out of the water. This was the first use of the depth charge in action.Tarrant, p.27 As U-68 began going down by the stern, Farnboroughs gunners scored another five hits on the U-boat's conning tower.

In many ships a shortage of 1-pounders caused them to be replaced by 3-inch (76 mm) guns. Their primary weapon, though, was their torpedo battery of a dozen 21 inch (533 mm) torpedo tubes in four triple mounts. They also carried a pair of depth charge rails. A "Y-gun" depth charge thrower was added to many ships.

Admiral Otto von Schrader was in overall command of the German forces.Berg 1997, p. 107 As the German ships approached the anchorage, the crew of MTB 345 set their vessel on fire and readied a depth charge to scuttle her. Before the depth charge could be detonated, MTB 345 was boarded by soldiers from the German patrol boat RA 202.

In many ships a shortage of 1-pounders caused them to be replaced by 3-inch (76 mm) guns. Their primary weapon, though, was their torpedo battery of a dozen 21 inch (533 mm) torpedo tubes in four triple mounts. They also carried a pair of depth charge rails. A "Y-gun" depth charge thrower was added to many ships.

During this mission, one of the vessels she was escorting, was torpedoed on 23 July. Wenonah recovered the survivors after dropping one depth charge on a suspected contact. The following day, 24 July, was torpedoed. Once again Wenonah dropped a depth charge, but this time it failed to detonate and the patrol ship turned to rescue work, recovering 38 of Rutherglens crew.

In many ships a shortage of 1-pounders caused them to be replaced by 3-inch (76 mm) guns. Their primary weapon, though, was their torpedo battery of a dozen 21 inch (533 mm) torpedo tubes in four triple mounts. They also carried a pair of depth charge rails. A "Y-gun" depth charge thrower was added to many ships.

The terms "depth charge" and "bomb shot" refer to cocktails that are made by dropping a shot glass filled with liquor into another drink.

Lenton, pp. 154–55 'Y' gun was also removed to allow her depth charge stowage to be increased to at least 60 depth charges.Friedman, p.

The ship carried of fuel oil that she had a range of at . The ship was armed with a single four-inch (102 mm) Mk V dual-purpose gun and two twin and two single mounts for Oerlikon light anti-aircraft (AA) guns. For anti-submarine work, Bloemfontein was fitted with two depth charge rails, and four depth charge throwers for 92 depth charges.du Toit, p.

La Grandière was extensively modernised in 1944. Her anti- aircraft armament was replaced with 40 mm Bofors and 20 mm Oerlikon guns, and new anti-submarine armament of (4 depth charge throwers and 6 depth charge rails, with 66 charges) was installed. She also received two radars and a sonar. Three ships survived the war and served during the Indochina War and in the Korean War.

The primary armament for Anzac consisted of four single QF 4-inch Mark IV guns. This was supplemented by two 2-pounder "pom-pom" guns for air defence, a single .303-inch Maxim machine gun, four .303-inch Lewis machine guns (two single guns and a twin-mount), two twin 21 inch (533 mm) torpedo tube sets, two depth charge throwers, and four depth charge chutes.

Four Shimushu-class (占守) or Type A ocean defence ships were ordered under the 1937 Programme and commissioned between June 1940 and March 1941. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns (taken from WW1 era destroyers) and six depth charge throwers, up to 60 depth charge and one 81 mm (3.2 in) A/S trench mortar.

50 caliber machine guns (12.7 mm). The ship was fitted with three quadruple torpedo-tube mounts for twelve torpedoes, guided by the Mark27 torpedo fire- control system. Those on the port and starboard sides could only fire to their side, but the centerline mount could fire to both sides. She was rigged for two depth charge roll-off racks and for depth charge projectors (K-guns).

A U.S. Navy depth charge, used in WWII Perhaps the simplest of the anti-submarine weapons, the depth charge, is a large canister filled with explosives and set to explode at a predetermined depth. The concussive effects of the explosion could damage a submarine from a distance, though a depth charge explosion had to be very close to break the submarine's hull. Air- dropped depth charges were referred to as 'depth bombs'; these were sometimes fitted with an aerodynamic casing. Surface-launched depth charges are typically used in a barrage manner in order to cause significant damage through continually battering the submarine with concussive blasts.

The killing radius of a depth charge depends on the depth of detonation, the proximity of detonation to the submarine, the payload of the depth charge and the size and strength of the submarine hull. A depth charge of approximately 100 kg of TNT (400 MJ) would normally have a killing radius (hull breach) of only against a conventional 1000-ton submarine, while the disablement radius (where the submarine is not sunk but put out of commission) would be approximately . A larger payload increases the radius only relatively little because the effect of an underwater explosion decreases as the cube of the distance to the target.

Tui picked up six survivors who said that Tui's depth charge attacks had damaged the submarine and forced it to the surface. The commanding officer and anti- submarine control officer on the Tui had doubted whether the contact was really a submarine, so the depth-charge attacks were not properly carried out. A later Naval Board report concluded that "had the proper procedure been followed and a full depth-charge pattern fired in the original attack, there is little doubt but that the submarine would have been destroyed then and there."Waters, Sydney David (1956) The Royal New Zealand Navy, Page 327-328, Official History, Historical Publications Branch, Wellington.

A hundred and forty-three Type D (丁型) ships were ordered but only sixty-seven were completed and commissioned between February 1944 and July 1945. A further 57 ships were planned under the 1944-45 Programme but were never ordered. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns, six 25mm (0.98 in) AA machine guns, 13 depth charge throwers, one depth charge chutes, up to 120 depth charge, and one 81 mm (3.2 in) mortar. The Type D version was a further simplification of the Ukuru design and were built to the same design as the Type C escort ship.

Two depth charge tracks were added, improved range-finders were added to the guns, and sonar and radar were fitted, in addition to other minor modifications.

The destroyers were armed with two depth charge throwers for anti- submarine warfare and were issued 20 naval mines. The ships had a complement of 130.

One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p. 141.

The ship's company was made up of 6 officers and 93 sailors. The destroyer's primary armament consisted of three QF 4-inch Mark IV guns. These were supplemented by a 2-pounder pom-pom, two 9.5-inch howitzer bomb throwers, five .303 inch machine guns (a mix of Lewis and Maxim guns), two twin 21-inch torpedo tube sets, two depth charge throwers, and two depth charge chutes.

The K-gun, standardized in 1942, replaced the Y-gun as the primary depth charge projector. The K-guns fired one depth charge at a time and could be mounted on the periphery of a ship's deck, thus freeing valuable centerline space. Four to eight K-guns were typically mounted per ship. The K-guns were often used together with stern racks to create patterns of six to ten charges.

Later developments included the Mark 24 "Fido" acoustic homing torpedo (and later such weapons), and the SUBROC, which was armed with a nuclear depth charge. The USSR, United States and United Kingdom developed anti-submarine weapons using nuclear warheads, sometimes referred to as "nuclear depth bombs". , the Royal Navy retains a depth charge labelled as Mk11 Mod 3, which can be deployed from its Wildcat helicopters and Merlin Mk2 helicopters.

303 Lewis machine guns, two Pentad torpedo launcher tube sets (with 10 torpedoes carried), two depth-charge throwers and one depth-charge chute (with 45 charges carried). The 4-inch gun was removed later in Nestors career. Nestor was laid down by the Fairfield Shipbuilding and Engineering Company, Limited, at Govan, Scotland in 1939. She was launched on 9 July 1940 by the daughter of one of the shipyard directors.

The ship's company was made up of 6 officers and 93 sailors. The destroyer's primary armament consisted of three QF 4-inch Mark IV guns. These were supplemented by a 2-pounder pom-pom, two 9.5-inch howitzer bomb throwers, five .303 inch machine guns (a mix of Lewis and Maxim guns), two twin 21-inch torpedo tube sets, two depth charge throwers, and two depth charge chutes.

Jordan & Moulin, pp. 38–39, 213–14, 216–18 When the war started in September 1939, Jaguar belonged to the 2nd Large Destroyer Division (2e division de contre- torpilleur) (DCT) with her sisters and . Between October and December, the ship had two depth-charge throwers reinstalled, No. 3 gun removed, and her depth charge stowage reduced to a dozen 200 kg and eight 100 kg depth charges to improve her stability.

While in Oran, Tigres forward boiler and funnel were replaced by additional oil tanks, that increased her range to at , and additional accommodation for her crew. Her depth charge chutes were sealed off and a pair of British-style racks were installed, each holding nine depth charges as well as four, later two, depth-charge throwers and additional depth charges. One set of torpedo tubes were removed in compensation.

This was supplemented by a quad- barelled QF 2-pounder naval gun, and five .303 inch machine guns of various types. The destroyer was also fitted with two 3-tube torpedo sets, two depth charge chutes, and four depth charge throwers. Later modifications to her armament included the installation of a second 2-pounder gun, and the replacement of the torpedo tube sets with two 4-tube sets.

The ship was armed with a single QF 4-inch naval gun Mk XIX forward, with anti-aircraft armament of one 2-pounder. Mk.VIII single "pom-pom" AA gun or a twin Oerlikon 20 mm cannon and six single Oerlikon guns. Anti-submarine armament consisted of a Hedgehog anti-submarine mortar, together with four depth charge throwers and two depth charge rails. 72 to 100 depth charges were carried.

The RPK-2 uses a 82R torpedo or 90R nuclear depth charge in the 533 mm version, and a 83R torpedo carrying or 86R nuclear depth charge in 650 mm version. Both submarine- and surface-launched versions exist. The surface-launched versions are used by the Slava, Kirov, Neustrashimyy and Udaloy classes. The submarine- launched versions are used by the Akula, Oscar, Typhoon, Delta, Kilo, and Borei classes.

For anti-submarine defense, six depth charge throwers and two depth charge racks were installed. Later, three twin-mounted 40 mm guns and the number of 20 mm cannon increased to eleven on Heermann. This would later change again to five twin 40 mm gun mounts and seven 20 mm cannon. The destroyers also had some armor, with side armor and armor on the decks over the machinery.

Fourteen Etorofu-class (択捉) or Modified Type A ocean defence ships were commissioned between May 1943 and 1945. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns and six depth charge throwers, up to 60 depth charge and one 81 mm (3.2 in) mortar. The Etorofu class was an improved version of the preceding Shimushu class with a greater emphasis on anti-submarine warfare.

Two torpedo tubes were fitted in a single twin mount, while two depth charge chutes, four depth charge throwers and 70 depth charges comprised the ship's anti-submarine armament. Type 291 and Type 285 radars was fitted, as was Type 128 sonar. Derwent was laid down at Vickers Armstrong's Barrow-in-Furness shipyard on 12 December 1940, was launched on 22 August 1941 and was completed on 24 April 1942.

Depth Charge is a game for the Apple II family of computers, created in 1978 by programmer Chris Oberth and published by The Elektrik Keyboard of Chicago, Illinois.

After the war, the Allies attributed the loss of U-400 to a depth charge attack by the frigate on 17 December 1944, about SE of Kinsale, Ireland.

While the warhead on a Hedgehog was much smaller than that of a depth charge it scored three times as many kills than its predecessors. This was due to the use of a contact fuse on the projectile, which would only detonate on impact with a target. Since the projectile would only explode on a hit the long periods of sonar "blackout" from the blast and turbulence of a conventional depth charge explosion were eliminated. In the later stages of World War II the Hedgehog was complemented in Britain by the Squid three- barrelled depth charge mortar, which fired 390-lb depth charges to a range of 250 metres, and in the US by the Mousetrap rockets.

Lust is the second album by Depth Charge, and alias of UK producer Jonathan Saul Kane. After five years with very little activity under the Depth Charge name, Kane returned with two albums almost at once (Lust 2 followed only a month later). Kane is often cited as a forerunner of trip hop and an influence on labels such as Mo'Wax and Ninja Tune and tracks on the album continued to reflect his interest in B-movie culture, many tracks containing samples from comprise instrumental hip-hop beats with dialogue and musical samples from films, particularly martial arts movies, westerns and blaxploitation flicks. There were some noticeable differences from the debut Depth Charge album, however.

Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes for the 40 depth charges they carried.

The Vasilefs Georgios class carried eight above-water torpedo tubes in two quadruple mounts. They had two depth charge launchers and a single rack for their 17 depth charges.

The ships carried two triple mounts of torpedo tubes amidships. A pair of depth charge chutes were built into their stern that housed a total of sixteen depth charges.

Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes for the 40 depth charges they carried.

Macpherson (1997), p. 58 For those Bangors assigned to convoy duty, they were armed with two depth charge launchers and two chutes for the 40 depth charges they carried.

The ships carried two triple mounts of torpedo tubes amidships. A pair of depth charge chutes were built into their stern that housed a total of sixteen depth charges.

The destroyer's primary armament consisted of three QF 4-inch Mark IV guns. These were supplemented by a 2-pounder pom-pom, two 9.5-inch howitzer bomb throwers, five .303 inch machine guns (a mix of Lewis and Maxim guns), two twin 21-inch torpedo tube sets, two depth charge throwers, and two depth charge chutes. Success was laid down by William Doxford and Sons Limited at their Sunderland shipyard in 1917.

The loss of these items totally removed her anti-submarine warfare capabilities, which was outdated by modern standards. But it was reported in 2005 that her fore Hedgehog ASW is still operational, together with her 8 K-gun Mk6 depth charge projectors and SQS-17B sonar,Saunders, Stephen: Jane's Fighting Ships 107th Edition 2004-2005. Jane's Information Group Ltd, 2004. although recent photos do not show the depth charge projectors on its usual location.

Some of her weapons were also removed, mainly its anti-submarine equipments due to lack of spare parts. This includes the five Mk6 depth charge projectors and two depth charge racks. This move totally removed her anti-submarine warfare capabilities, which is in fact outdated at present conditions. Rizal completed restoration works in January 1996, wherein she was renumbered and recommissioned as BRP Rizal (PS-74), which is used to this day.

The destroyer's primary armament consisted of three QF 4-inch Mark IV guns. These were supplemented by a 2-pounder pom-pom, two 9.5-inch howitzer bomb throwers, five .303 inch machine guns (a mix of Lewis and Maxim guns), two twin 21-inch torpedo tube sets, two depth charge throwers, and two depth charge chutes. Swordsman was laid down by Scott's Shipbuilding and Engineering Company at their Greenock shipyard in 1917.

On 14 November 1946, Garland was sold "as is" to the Royal Netherlands Navy for £9,000 and was initially used as a school ship. She was refurbished in 1948 as an anti-submarine training ship. This is probably when Garland was rearmed with two anti-aircraft guns in 'A' and 'X' positions, a Hedgehog in 'B' position and six 20-millimetre Oerlikons. She carried four depth charge throwers and two depth charge rails.

The ships also had two depth charge throwers and one depth charge rail on the stern that came with 15 depth charges. The ships were equipped with Type 145 and Type 147B ASDIC. The Type 147B was tied to the Squid anti-submarine mortar and would automatically set the depth on the fuses of the projectiles until the moment of firing. A single Squid-launched attack had a success rate of 25%.

The proposed anti-aircraft (AA) armament were eight 40/60 mm guns in twin mountings set atop the middle and after deck houses to give all around, overlapping arcs of fire. These were to be supplemented by 20 mm guns positioned variously around the ship. Eight torpedo tubes were to be carried in two quadruple mounts. A/S armament called for two depth charge rails and four depth charge throwers to be fitted.

She sustained depth charge damage from the that ruptured her battery tank and filled the submarine with chlorine gas, forcing her to surface and eventually surrender. This problem was resolved by strengthening the battery compartment and fitting rubber shock absorbers. In contrast with Tempest, the modified survived a prolonged depth charge attack from Japanese escort vessels, which rendered her hull a constructive total loss but inflicted no damage to her battery cells whatsoever.

Although the ships were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The Maestrales could carry 56 mines.

Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes to deploy the 40 depth charges they carried.

On her first day of active service she was attacked by a US Catalina. The depth charge attack was so effective that she had to return to base in France.

Although the ships were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The Maestrales could carry 56 mines.

Although they were not provided with a sonar system for anti-submarine work, they were fitted with one or two pairs of depth charge throwers. The ships could carry 48 mines.

Although they were not provided with a sonar system for anti- submarine work, they were fitted with one or two pairs of depth charge throwers. The ships could carry 48 mines.

Although they were not provided with a sonar system for anti-submarine work, they were fitted with one or two pairs of depth charge throwers. The ships could carry 48 mines.

Three torpedo tubes for torpedoes were triple mounted aft of the superstructure and two depth charge throwers were mounted further towards the stern. 42 mines could also be carried for minelaying.

On 5 February 1940, U-41 was sunk after a depth charge attack by the British destroyer off the coast of Ireland. All 49 crew members were lost with the ship.

Three torpedo tubes for torpedoes were triple mounted aft of the superstructure and two depth charge throwers were mounted further towards the stern. 42 mines could also be carried for minelaying.

By the time of World War II, anti-submarine weapons had been developed somewhat, but during that war, there was a renewal of all-out submarine warfare by Germany as well as widespread use of submarines by most of the other combatants. The effective use of depth charges required the combined resources and skills of many individuals during an attack. Sonar information, helmsmen, depth charge crews and the movement of other ships had to be carefully coordinated in order to deliver a successful depth charge attack. As the Battle of the Atlantic wore on, British and Commonwealth forces in particular proved particularly adept at depth charge tactics, and formed some of the first destroyer hunter-killer groups to actively seek out and destroy German U-boats.

The ship carried enough fuel oil that she had a range of at . The ship was armed with a single 4-inch (102 mm) Mk V dual-purpose gun and four single mounts for Oerlikon light anti- aircraft (AA) guns.du Toit, p. 182 For anti-submarine work, Pelorus was fitted with two depth charge rails, and four depth charge throwers. The ship was equipped with a Type 271 surface-search radar and a Type 291 air-search radar.

They were smaller by 200 tons than the Ukurus and engines that propelled them were also smaller, at versus for the Ukurus. Because of the decrease in engine power, the speed fell from to . The number of guns went from three to two. The number of depth charges aboard was the same, 120, but the number of depth charge throwers was decreased from 18 to 12 and the depth charge chutes were decreased from two to one.

Two Hedgehog anti-submarine mortars were fitted, together with eight depth-charge throwers and two depth charge racks, and two launchers for 342-mm Mark 32 anti-submarine torpedoes. The modified ships were fitted with MLA-1B air-search radar, SPS-5B surface search radar and SPG-34 fire control radar, with QHBa sonar. Displacement increased to standard and full load while speed dropped to The revised ship's complement was recorded as 191 in 1971 and 199 in 1979.

Lansdowne first operated along the Atlantic seaboard on shakedown, antisubmarine, and escort duty, and attacked an enemy submarine off Cape Hatteras on 3 July. Following a severe depth charge attack, large quantities of oil bubbled to the surface and it was presumed the submarine had been sunk. Arriving at Cristobal, Panama Canal Zone, 13 July, the destroyer was sent to a position where PC-458 had located an enemy submarine. Upon arrival, Lansdowne launched a depth charge attack.

May was responsible for a major release of highly confidential military information during World War II known as the May Incident. U.S. submarines had been conducting a successful undersea war against Japanese shipping during World War II, frequently escaping their anti-submarine depth charge attacks. May revealed the deficiencies of Japanese depth-charge tactics in a press conference held in June 1943 on his return from a war zone junket.Tuohy, William, America's Fighting Admirals, Zenith Press, (2007), pp.

Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted (these were actually spare quintuple mounts with the centre tube removed), while the ship had an depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried. Undine was laid down at Thornycroft's Woolston, Southampton shipyard on 18 March 1942 and was launched on 1 June 1943. She was completed on 23 December 1943, and assigned the Pennant number R42.

This, however, was just diversionary and the mine was a dummy. USS Underhill after realising this noticed several sonar contacts, which were later revealed to be a Japanese submarine and several Kaiten. A depth charge run was made which did not succeed in killing the submarine although it is suspected that it did succeed in neutralizing one of the Kaiten. The depth charge run was followed by a ramming attempt on a submarine at periscope depth.

Anti-submarine armament was relatively heavy for the time, with a load of 40 depth charges, launched by two depth charge throwers and two depth charge chutes, with Type 124 Sonar fitted in a retracting dome. The ship had a crew of 60 officers and men. Mallard was laid down at Alexander Stephen and Sons' Linthouse, Glasgow shipyard on 12 June 1935, was launched on 26 March 1936, and commissioned at Devonport on 15 July 1936.

For anti-submarine combat, Split was equipped with two Hedgehog spigot mortars, six depth-charge throwers and two depth-charge racks. The ship was fitted with a Mk 37 fire-control director for the 5-inch guns and a Mk 51 director for the AA guns. The Mk 37 director was equipped with a Mk 12 fire- control radar and a Mk 22 height-finding radar. SC and SG-1 search radars completed her radar suite.

The two RBU-6000 depth charge rocket launchers created a barrier defense against submarines, incoming torpedoes and frogmen. Though relatively unsophisticated by western standards, the RBU-6000 was a very successful and popular system, used on many small or large surface ships. It consisted of a twelve launch tubes for unguided rockets, armed with a compact but powerful depth charge. Rockets were directed by simply changing the angle of the tubes and thereby the ballistics of the unguided rockets.

The three destroyers made a coordinated depth charge assault that destroyed U-173. The following day, Woolsey departed the Moroccan coast to return to Hampton Roads, where she arrived on 30 November.

Cassells, The Capital Ships, p. 139 Two 21-inch torpedo tubes were fitted, with a payload of seven torpedoes carried. Two hydraulic- release depth charge chutes were carried for anti-submarine warfare.

299 & 913. then survived an intensive depth charge attack with seemingly minor damage. When she submerged the next day, however, the submarine began taking water. She surfaced, made repairs, then submerged to .

In the engagement which followed, was torpedoed and sunk. J, R. Y. Blakely made several depth charge attacks before retiring to protect Wake Island. She returned to New York 16 August 1944.

Within five minutes, they began dropping depth charges. At 11:30, the last depth charge attack took place. At 14:30, the last sound contact was made with the still searching enemy.

Modern sonar, and a relatively powerful depth-charge outfit of 30 depth charges provided the ship's anti-submarine equipment. No torpedo tubes were fitted. The ship's crew increased to 187 officers and men.

The escorts forced Ray to dive, but she heard the 7,000-ton cargo vessel break up. The submarine underwent a sustained depth charge pounding, but escaped serious damage, returning to Fremantle 31 August.

These were dual-purpose guns capable of attacking both surface and aircraft targets. Anti-aircraft protection was by four Type 96 anti-aircraft guns in two twin-gun mounts abreast the bridge. The Mikura class was initially armed with 120 Type 95 depth charges with two Type 94 depth charge launchers and had a Model 93 sonar and a Type 93 hydrophone. Later in the war, a third Type 94 depth charge launcher was added on the stern and the paravanes were removed.

In November, the ship had a British Type 123 ASDIC installed; in addition two depth-charge throwers were reinstalled, No. 3 gun removed, and her depth charge stowage reduced to a dozen 200 kg and eight 100 kg depth charges to improve her stability.Jordan & Moulin, pp. 39, 225, 227–28 By 22 May Chacal was reassigned to the 2nd DCT when the unit was tasked to carry demolition teams to the northernmost French ports; the ship arrived at Calais that evening.Jordan & Moulin, pp.

After repairs and a resumption of work at Manus, Argonne sailed for Kossol Passage, in the Palaus, arriving there on 15 December 1944. While anchored in berth 74, Kossol Roads, the ship again suffered damage at the hands of friendly ships. lay alongside to the port side, aft; and to the port side, forward. An LCVP, attempting to tie up alongside the subchaser, accidentally fouled its ramp in the depth charge rack of SC-702, wrenching loose a 300-pound depth charge.

126 For ASW purposes, the ships were equipped with one three-barreled Squid anti-submarine mortar with 81 projectiles. The ships also had two depth charge throwers and one depth charge rail on the stern that came with 15 depth charges. The ships were equipped with Type 145 and Type 147B ASDIC. The Type 147B was tied to the Squid anti-submarine mortar and would automatically set the depth on the fuses of the projectiles until the moment of firing.

Her commander was quickly notified, and Christabel turned toward the U-boat when the periscope disappeared under the water. At 20:55, a depth charge was dropped which detonated 10 seconds afterward. A second charge was dropped a few moments later. No secondary explosion was heard after the explosion of the first charge but after the sound of the second depth charge a third, "very violent", explosion was heard which threw up a large water column close to Christabels stern.

126 For ASW purposes, the ships were equipped with one three-barreled Squid anti-submarine mortar with 81 projectiles. The ships also had two depth charge throwers and one depth charge rail on the stern that came with 15 depth charges. The ships were equipped with Type 145 and Type 147B ASDIC. The Type 147B was tied to the Squid anti-submarine mortar and would automatically set the depth on the fuses of the projectiles until the moment of firing.

The depth-charge throwers were removed in 1936 and more 200-kilogram depth charges were carried in their place. The ship's Hotchkiss machineguns were repositioned in front of the bridge in early 1939. Kersaint was fitted with a British Alpha 128 ASDIC system in April 1940. The Navy reconsidered its anti-submarine warfare tactics after the war began in September and eventually reinstated the pair of depth-charge throwers, although these were an older model than the one previously installed.

During World War I Cary was awarded the Navy Cross. During a hurricane, a depth charge on the fan-tail of broke loose, menacing the safety of the ship. Together, with three enlisted men, he went to the fan- tail, and they managed to secure this depth charge, including its safety pin, at a great risk of being washed overboard themselves. During the years between World War I and World War II, Cary served in many capacities and many stations.

During her late 1941 refit in Calcutta, India, Vasilissa Olgas armament was revised to better suit her role as a convoy escort. The rear set of torpedo tubes was replaced by a AA gun and 'Y' gun was removed to increase the number of depth charge throwers and depth charge stowage. To reduce topweight, the 3.7 cm guns were replaced by Oerlikon autocannon. Her mainmast was removed and her aft funnel shortened to improve the arcs of fire of her AA guns.

Their anti-aircraft suite consisted of one twin-gun stabilised Mk IV "Hazemeyer" mount for Bofors guns and two four twin mounts for Oerlikon AA guns. To compensate for the weight of the remote control equipment, one of the two quadruple 21-inch (533 mm) torpedo tube mounts was removedChesneau, p. 43 and the depth charge stowage was reduced to only 35. The ships were fitted with a pair of depth charge rails and two throwers for the depth charges.

Chester remained on patrol with Task Force 8 (TF 8) in Hawaiian waters. On 12 December, her planes bombed a submarine, then guided to a depth charge attack which continued until contact was lost.

The depth charge roll-off racks were rigged on the stern. In early 1942, the Mahan-class destroyers began a wartime armament refitting process, but most of the class was not fully refitted until 1944.

Robert Gardiner, Conway's All the World's Fighting Ships 1922–1946, Naval Institute Press, 1980, p. 362Janusz Piekałkiewicz, Sea War, 1939–1945, Historical Times, 1987, p. 350 She was also fitted with two depth charge throwers.

Whitley, p. 111 One depth charge rack and two throwers were fitted for 35 depth charges.English, p. 141 The Turkish ships were fitted with the ASDIC sound detection system to locate submarines underwaterHodges & Friedman, p.

During WWII out of 5,174 British depth charge attacks there were 85.5 kills, a ratio of 60.5 to 1. In comparison, the Hedgehog made 268 attacks for 47 kills, a ratio of 5.7 to 1.

First World War sailor with a fish stunned by the explosion of a depth charge Naval battles also tend to kill fish with the same effect of blast fishing from shells exploding in the water.

While hunting south of Newfoundland on 5 July, Baker picked up a submarine on her sound gear at 1907, and carried out a depth charge attack. The force of the explosions, however, rendered the training mechanism on her sound gear inoperable and three men had to go below to turn the gear manually. Baker again located the submarine and delivered another depth charge attack, blowing the enemy to the surface. Her guns opened fire at 1,200 yards as soon as the submarine broke the surface.

Main armament for a V-class destroyer consisted of four QF Mark V guns. This was supplemented by a QF 2-pounder gun (with a second installed in January 1942), two twin Lewis gun mountings, a single Lewis gun (later replaced by a 4-barrel Vickers .303 gun), and two torpedo tube sets (initially 3-tube, later replaced by 4-tube sets). Four depth charge chutes were fitted during construction, with two depth charge throwers installed later; the destroyer could carry up to 50 charges.

At first, Japanese anti-submarine defenses proved less than effective against U.S. submarines. Japanese sub detection gear was not as advanced as that of some other nations. The primary Japanese anti-submarine weapon for most of WWII was the depth charge, and Japanese depth charge attacks by its surface forces initially proved fairly unsuccessful against U.S. fleet submarines. Unless caught in shallow water, a U.S. submarine commander could normally dive to a deeper depth in order to escape destruction, sometimes using temperature gradient barriers to escape pursuit.

Early depth charges were designed to be rolled into the water off of the stern of a fast ship. The ship had to be moving fast enough to avoid the concussion of the depth charge blast. Later designs allowed the depth charge to be hurled some distance from the ship, allowing slower ships to operate them and for larger areas to be covered. Today, depth charges not only can be dropped by aircraft or surface ships, but can also be carried by missiles to their target.

Main gun armament was four 4 inch (102 mm) QF Mk XVI dual purpose (anti-ship and anti-aircraft) guns in two twin mounts, with a quadruple 2-pounder "pom-pom" and three Oerlikon 20 mm cannon providing close-in anti-aircraft fire. Two torpedo tubes were fitted in a single twin mount, while two depth charge chutes, four depth charge throwers and 70 depth charges comprised the ship's anti-submarine armament. Type 291 and Type 285 radars were fitted, as was Type 128 sonar.

Norman was capable of reaching . The ship's company consisted of 226 officers and sailors. The ship's armament consisted of six 4.7-inch QF Mark XII guns in three twin mounts, a single 4-inch QF Mark V gun, a 2-pounder 4-barrel Pom Pom, four 0.5-inch machine guns, four 20 mm Oerlikon anti-aircraft guns, four .303 Lewis machine guns, two Pentad torpedo launcher tube sets (with 10 torpedoes carried), two depth-charge throwers and one depth-charge chute (with 45 charges carried).

223 Fire-control systems were fitted the following year. The Squadron was visited by King Carol II of Romania and the Prime Minister, Nicolae Iorga, on 27 May 1931. By 1940, the midships 120 mm gun had been replaced by a pair of twin-gun French Hotchkiss anti-aircraft machinegun mounts and the remaining 76 mm guns by a pair of German SK C/30 AA guns. Depth charge racks had been fitted on the stern and an Italian depth charge thrower was added.

The number of guns went from three to two. The number of depth charges aboard was the same, 120, but the number of depth charge throwers was decreased from 18 to 12 and the depth charge chutes were decreased from two to one. Due to the simplifications of the design, a significant saving was made in construction time. The Type C escorts required approximately 20,000 man-hours each, compared to the 35,000 man-hours of the Ukurus and the 57,000 man-hours of the Mikuras.

Despite best efforts by the crew to remove depth charge primers, two exploded when the ship sank, killing men in the water and disabling a nearby destroyer. She returned to France, to Bordeaux, on 26 February.

U-661 was sunk on 15 October 1942 in the North Atlantic in position , she was rammed and thereafter sunk by gun fire and a heavy depth charge from Royal Navy destroyer . All hands were lost.

58 The 2-pounder gun was later replaced with a twin 20 mm Oerlikon mount. Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried.

Depth Charge raced on the Thoroughbred tracks, piling up a record of five wins, three seconds and two thirds from sixteen starts. His total earnings were $5,943.00, including a third place finish in the Myles Standish Stakes.

Her anti- submarine features included ASDIC, a hydrophone, and four depth-charge throwers. Her deck armour was , while her side belt armour was . Upon her commissioning, Tromp was arguably the most powerful ship in the Dutch navy.

Some of her weapons were also removed, mainly its anti-submarine equipment due to lack of spare parts. This includes the five Mk6 depth charge projectors and two depth charge racks. This move totally removed her anti-submarine warfare capabilities, which were outdated. Quezon completed a rehabilitation overhaul in April 1996 by Hatch & Kirk, wherein she was fitted with a remanufactured EMD 645C diesel engines, rehabilitation works, and equipping the ship with state-of-the-art safety equipment on deck and engine room with all digital control panels.

In the Pacific Theater of World War II, Japanese depth charge attacks initially proved fairly unsuccessful against U.S. and British submarines. Unless caught in shallow water, a submarine would just dive below the Japanese depth charge attack. The Japanese were unaware that the submarines could dive so deep. The old United States S-class submarines (1918–1925) had a test depth of ; the more modern fleet-boat Salmon-class submarines (1937) had a test depth of ; the Gato-class submarines (1940) were , and Balao-class submarines (1943) were .

Four other Finnish freighters were lost when Soviet Air Force bombed the Finnish ports. One Finnish escort () was lost–the only loss of the Finnish Navy in the Winter War in the Baltic Sea—while escorting convoys in Finnish waters, when during an anti-submarine operation, a depth charge thrower misfired and depth charge exploded while still onboard sinking the ship. The Soviet Baltic Fleet lost submarine during the blockade. After the ice formation prevented submarine operations, the Soviet blockade was based solely on the aircraft patrols and the mines dropped from the aircraft.

The subchasers' depth charge racks, Mousetrap anti-submarine rocket launchers, and K-gun depth charge projectors were removed, and an additional set of davits were installed so that each ship could carry two boats, whose motors were equipped with specially muffled exhausts for ultra-quiet running. They also removed one of the Oerlikon 20 mm cannon from amidships and installed a 2-pounder gun aft and two cal .50 machine guns on the flying bridge. The ships were christened Hitra (SC-718), Hessa (SC-683), and Vigra (SC-1061).

For air defence, Dubrovnik had twin-mounted Škoda L/35 guns located on the centreline between the two sets of torpedo tubes, and six Škoda L/67 anti-aircraft guns, arranged in two twin mounts and two single mounts. The twin mounts were located between the two funnels, with the single mounts on the main deck abreast the aft control station. For anti-submarine work she was equipped with two depth charge throwers and two depth charge rails, and carried ten depth charges. She also carried two Škoda machine guns and 40 mines.

In the event the USN only took charge of eight of these ships; the other seven were transferred back to the RN under Lend-Lease arrangements. The US ships were numbered PG 86 to 100 and were referred to as the Action class. The Temptress class were armed with a 4-inch gun forward, a /50 dual-purpose (DP) gun aft, two 20 mm anti-aircraft guns, two depth charge racks, and four depth charge throwers. The Action class replaced the 4-inch gun with another 3-inch/50 cal.

The ship's main gun armament consisted of three 3-inch (76 mm) 50 caliber dual-purpose (i.e. anti-surface and anti-aircraft) guns, two forward and one aft, in open mounts. Close in armament consisted of two 40 mm Bofors guns, backed up by eight single Oerlikon 20 mm cannon. A triple mount of 21-inch (533 mm) torpedo tubes provided a capability against larger ships, while anti-submarine armament consisted of a Hedgehog forward-firing anti-submarine mortar and four depth charge throwers and two depth charge rails.

For anti-submarine work, she was fitted with two depth charge rails and a pair of depth charge throwers for her 40 depth charges. The ship was equipped with a Type 271 surface-search radar and a Type 123A ASDIC. Rockrose was one of those Flower-class ships that had an extended forecastle and her crew numbered 85 officers and ratings. As part of her conversion to a survey ship in 1949–50, the ship was disarmed and her interior was extensively reworked to improve her endurance and accommodations.

However, the actions of Rush, Rendernick and Odom would remain hidden for several decades. "At the time, Billfish's patrol report falsified the chaos on board during the depth-charge attack and Rush promised to keep the details secret on the condition that the skipper, Frederic Colby Lucas, Jr. resign." Rush and Lucas made a gentleman's agreement that Lucas would retire to surface ships as he "cracked" during the twelve-hour depth charge, retiring to his private chambers during the attack. Lucas resigned from submarine duty upon returning to port.

The depth- charge throwers were removed in 1936 and more 200-kilogram depth charges were carried in their place. The Navy reconsidered its anti-submarine warfare tactics after the war began in September and intended to reinstate the depth- charge throwers, although these were an older model than the one previously installed; Tartu had not received her as of early 1942. As an interim measure, a pair of rails were installed on the stern for depth charges. Each rail could accommodate three depth charges and ten more were stored in the magazine.

The depth-charge throwers were removed in 1936 and more 200-kilogram depth charges were carried in their place. The ship's 13.2-millimeter machineguns were repositioned in front of the bridge in early 1939. The four single 37-millimeter mounts aboard Vauquelin were replaced by a pair of twin mounts in May 1940. The Navy reconsidered its anti-submarine warfare tactics after the war began in September and reinstated the pair of depth-charge throwers, although these were an older model than the one previously installed. Vauquelin received hers in June 1940Jordan & Moulin 2015, pp.

The depth-charge throwers were removed in 1936 and more 200-kilogram depth charges were carried in their place. The Navy reconsidered its anti-submarine warfare tactics after the war began in September and intended to reinstate the depth-charge throwers, although these were an older model than the one previously installed; Le Chevalier Paul had not received hers before her loss. As an interim measure, a pair of rails were installed on the stern for depth charges. Each rail could accommodate three depth charges and ten more were stored in the magazine.

The ship's main gun armament consisted of three 3-inch (76 mm) 50 caliber dual-purpose (i.e. anti-surface and anti-aircraft) guns, two forward and one aft, in open mounts. Close in armament consisted of two 40 mm Bofors guns, backed up by eight single Oerlikon 20 mm cannon. A triple mount of 21-inch (533 mm) torpedo tubes provided a capability against larger ships, while anti-submarine armament consisted of a Hedgehog forward-firing anti- submarine mortar and four depth charge throwers and two depth charge rails.

It was apparently felt that the heavy AA armament would shoot down most incoming aircraft in all situations, but the attack on Pearl Harbor showed that this was not true.Friedman, pp. 203-204 While on Neutrality Patrol, some of the class landed their after torpedo tube mounts and .50-caliber machine guns so that their Depth charge and light AA batteries could be increased; photographs show six 20 mm Oerlikon cannon were added along with four K-gun depth charge throwers and, reportedly, a Y-gun on some ships.

Tawasa towed a nuclear bomb used as a depth charge as it was detonated in Operation Wigwam in 1955. Wigwam involved a single test of the Mark 90 Betty nuclear bomb, a cold war nuclear depth charge, developed by the United States in 1952. The test was conducted on May 14, 1955, about southwest of San Diego, California, with 6,800 personnel aboard 30 ships involved. The purpose of Wigwam was to determine the vulnerability of submarines to deeply detonated nuclear weapons, and to evaluate the feasibility of using such weapons.

For ASW, the destroyer escorts were equipped with two forward- firing hedgehog anti-submarine mortars, two fixed torpedo tubes for Mk 32 torpedoes and one depth charge rack placed over the stern. The fixed torpedo tubes were later removed and replaced with two triple tube mounts. In 1961, Charles Berry and McMorris received a Norwegian-designed Terne III depth charge system deployed via rockets. The Claud Jones class was initially equipped with variable depth sonar, SPS-10 and SPS-6 search radars and SQS-29/32 hull-mounted sonar.

480 tons of oil were carried, giving a range of at . The ships had a main gun armament of a single QF 4-inch Mk XIX dual-purpose gun, backed up by two twin and two single Oerlikon 20 mm cannon. Anti-submarine armament consisted of a single triple-barrelled Squid anti-submarine mortar with 81 charges backed up by two depth charge throwers and a single depth charge rail, with 15 depth charges carried. Type 272 or Type 277 surface search radar was fitted, as was high- frequency direction finding (HF/DF) gear.

The three destroyer escorts reached Manus at 1500 on 27 May. After taking on fuel, provisions, and ammunition, they sailed at 18:00 28 May with to rejoin the search. Hazelwood detected RO-105 on radar at 01:56 on 30 May and missed with a depth charge attack. George and Raby joined Hazelwood and made sixteen Hedgehog and depth charge attacks over a period of 25 hours. RO-105 came up for air at 03:10 on 31 May and was immediately detected by George and Raby.

A hundred and thirty-two Type C (丙型) ships were ordered but only fifty-six were commissioned between February 1944 and 1945. A further 168 ships were planned under the 1944-45 Programme but were never ordered. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns, six 25mm (0.98 in) AA machine guns, 13 depth charge throwers, one depth charge chutes, up to 120 depth charges, and one 81 mm (3.2 in) mortar. The Type C Kaibōkan was a further simplification of the Ukuru design.

He proposed that rams should be put on torpedo boats, destroyers and trawlers, and he submitted a design for a bomb which could be used to attack submarines on or near the surface. These measures were rapidly implemented. In late October 1914 Captain P. H. Colomb proposed a depth charge actuated by a hydrostatic pressure valve and in the same month Rear-Admiral Sir Charles Madden suggested adapting howitzers to lob depth charges in the water. In November Scott proposed a simple depth charge deliverable from the air.

20 mm Oerlikon gun on board HMS Hermione, showing a naval gunner utilising the rubber shoulder rests for high-angle firing, with the Thornycroft depth charge thrower Mark II and depth charge launching rail in the background. While several of the Dido-class completed with reduced main armaments owing to production problems (the King George V-class battleships had priority for the new guns), Hermione completed with the full ten-gun outfit. In October–November 1941, the ship's .50 in machine guns were replaced by five single Oerlikon 20 mm cannon.

On 24 March, during her first HUK assignment, she located the Japanese transport submarine , then attempting to replenish the enemy garrison at Wotje. In the ensuing coordinated depth charge run, Manlove and her companion, , sank the Japanese boat.

These external tanks proved vulnerable to leaking after depth charge damage, thus betraying the position of the submarine. These boats were the first British submarines fitted with Asdic and VLF radio which could be used at periscope depth.

Lenton, p. 154 Three depth-charge chutes were fitted, each with a capacity of two depth charges. After World War II began this was increased to 33 depth charges, delivered by one or two rails and two throwers.

The submarine departed 21 August, damaged one tanker, and eluded several depth charge attacks before returning to Pearl Harbor 18 October 1943. She also took part in the search for downed aviators off Wake Island, 8–9 October.

One hit under the main mast, damaging but not sinking the target. The escort delivered a depth charge attack then took the damaged vessel under tow for Rabaul. Enemy planes prohibited Seadragon from delivering the coup de grace.

She also carried six K-gun depth charge projectors and a Hedgehog as anti-submarine weapons. After the war her aft 5-inch mount was replaced by a helicopter deck, sometime after 1964 the forward mount was removed.

Additional depth charge stowage later replaced the 12-pounder high-angle gun. The 2-pounder mounts were replaced by Oerlikon autocannon and two additional Oerlikon guns were also added in the forward superstructure.Friedman, pp. 237, 241, 252Whitley, p.

41 Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges. Vegreville was equipped with LL and SA minesweeping gear to counter magnetic and acoustic naval mines.

She also carried six K-gun depth charge projectors and a Hedgehog as anti-submarine weapons. After the war her aft 5” mount was replaced by a helicopter deck, and by 1951 her forward mount had also been removed.

Cruisers are like small versions of battleships. With eight hit points they have less firepower than battleships but come equipped with a depth charge launcher to repel submarine assaults. They can deal two points of damage towards submerged submarines.

The ships' depth charge complement increased from 15 at the start of the war to 40 for Australian ships and up to 90 for Royal Navy ships, while several ships were also refitted with a Hedgehog anti-submarine projector.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried. Westmount was equipped with LL and SA minesweeping gear to clear both magnetic and acoustic naval mines.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried. Port Hope was equipped with LL and SA minesweeping gear to clear both magnetic and acoustic naval mines.

Depth Charge is a 1960 British drama film directed by Jeremy Summers and starring Alex McCrindle, David Orr and Elliot Playfair.Murphy p.575 It was a B Film, shot partly on location in Berwickshire, and released by British Lion Films.

Ark Royal had been turning into wind to launch aircraft when Guggenberger struck. He then escaped the depth charge attacks of the escorting destroyers. Despite attempts to salvage Ark Royal, she had to be abandoned and sank the next day.

The Royal Navy had previously operated flotillas of small torpedo- and depth-charge-armed craft (coastal motor boats) during World War I (1914-1918). They operated as often in action against the enemy coast as in defence of British coastal areas.

The S3V Zagon is a guided but un-propelled depth charge developed by the Russian firm Tactical Missiles Corporation. It was first unveiled at the 1992 MAKS Airshow as part of a marketing effort which resulted in China purchasing the weapon.

Two more 20 mm and two depth charge throwers were added. In use, the class proved to be unreliable.Whitley, p.160 Two of this class, Bettino Ricasoli and Giovanni Nicotera, were sold to Sweden and transferred just as Italy declared war.

Anti submarine armament consisted of depth charge throwers with 40 depth charges carried.Gardiner and Chesneau 1980, p. 57.Hague 1993, p. 16. When completed, Black Swan was not fitted with the planned quadruple pom-pom, but with two quadruple Vickers .

Essex Lance was repaired and returned to service. U-165 torpedoed one more vessel of the convoy, Pan York, which survived. Salisbury and Arrowhead made more depth charge attacks at 08:04, neither of which were reported by U-165.

NS 8000-374/1. – NS 4052-374/1. Steaming on her way, she passed through Lake Erie into Lake Ontario to Toronto, which she reached on the 20th. Off the Queen City she carried out gun and depth charge trials.

Jentschura et al 1977, p. 214. Anti-submarine armament consisted of two depth charge throwers with 36 depth charges carried, while anti-aircraft armament consisted of two 40 mm guns and two machine guns. Crew was 45 officers and men.

That evening she sank two sailing junks and then set course for a new station off Port Arthur. She sank a trawler 3 July, survived a furious depth charge attack by patrol vessels, and proceeded to Guam arriving 16 July 1945.

58 Those ships assigned to convoy duty had two depth charge launchers and four chutes to deploy the 40 depth charges they carried. Sarnia was equipped with LL and SA minesweeping gear to clear both magnetic and acoustic naval mines.

USS Agerholm (DD-826) launched an ASROC anti-submarine rocket, armed with a nuclear depth bomb, during the Swordfish Test of 1962 The high explosive in a depth charge undergoes a rapid chemical reaction at an approximate rate of . The gaseous products of that reaction momentarily occupy the volume previously occupied by the solid explosive, but at very high pressure. This pressure is the source of the damage and is proportional to the explosive density and the square of the detonation velocity. A depth charge gas bubble expands to reach the pressure of the surrounding water.

After assuming command at Rosneath, the Norwegian crews sailed their new vessels first to Derry, and then to Scalloway in Shetland, where they completed their fitting-out. The subchasers' depth charge racks, Mousetrap anti-submarine rocket launchers, and K-gun depth charge projectors were removed, and an additional set of davits were installed so that each ship could carry two boats, whose motors were equipped with specially muffled exhausts for ultra-quiet running. They also removed one of the Oerlikon 20 mm cannon from amidships and installed a 2-pounder gun aft and two cal .50 machine guns on the flying bridge.

Two of the ships (Legazpi and Vicente Yáñez Pinzón) were modernised at the start of the 1960s as part of a major programme of modernising ships of the Spanish Navy. The two ships were completely re-armed, with a gun armament of two American 5-inch (127mm) 38 calibre dual purpose guns in two single mounts, with a close-in anti-aircraft armament of four 40mm Bofors L/70 guns. Anti-submarine armament consisted of two racks for anti- submarine torpedoes (eight torpedoes were carried), two Hedgehog anti- submarine mortars, eight depth-charge throwers and two depth-charge racks.

Orizaba under construction at William Cramp & Sons in Philadelphia, c. 1917 Assigned to the Atlantic Transport Service, Orizaba carried over 15,000 troops in six convoy trips to France before the end of World War I. In one such voyage, Orizabas executive officer, ordnance expert William Price Williamson, worked closely with Commander Richard Drace White—Orizabas commanding officer, himself an ordnance expert—to develop a workable depth charge launcher which would provide the transport with a measure of protection from enemy submarines. Williamson set about modifying a Lyle gun into a depth charge launcher, and successfully tested it on 16 August 1918.

Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted, while the ship had an depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried. Troubridge was fitted with a Type 291 air warning radar on the ship's tripod foremast, with a Type 285 fire control radar integrated with the ship's high-angle gun director. A high-frequency direction finding (HF/DF) aerial was fitted to a lattice mainmast. Troubridge was fitted as a leader, and as such had a crew of 225 officers and other ranks.

50-caliber machine guns. The 1.1-inch mounts were intended to compensate for the 5 inch guns' lack of AA capability; in the 1930s two quad mounts were thought to be sufficient. During World War II, as with the Porters, the Somers-class main armament was reduced to six guns, with the light AA armament replaced by up to six 40 mm Bofors in twin mounts and several 20 mm Oerlikon guns by also landing a torpedo tube mount. On most ships four K-gun depth charge throwers were added to augment the as-built pair of depth charge racks.

At 05:19 Prien was caught on the surface and dived but could not escape the rapid depth charge attack from the escorts. Prien has generally been thought to have been sunk by the British destroyer west of Ireland; the submarine was attacked by Wolverine and , which took turns covering each other's ASDIC blind spots and dropping patterns of depth charges until U-47 rose almost to the surface before sinking and then exploded with an orange flash visible from the surface. Other British reports of the action mention a large red glow appearing deep below the surface amid the depth charge explosions.

The ship carried a heavy depth charge outfit of 110 charges, and was originally planned to be fitted with eight depth-charge throwers and three rails, although this was later revised to four throwers and two chutes as this gave a more efficient pattern of depth charges. Lapwing was laid down at Scotts Shipbuilding and Engineering Company's Greenock shipyard as yard number 605 on 17 December 1941, was launched on 16 July 1943 and completed on 21 March 1944. She was allocated the Pennant number U62, although owing to an apparent error at the shipyard, this was painted on the ship as UPT62.

The middle gundeck, between the torpedo tubes, was left empty. The mountings proved even less reliable than the ones they replaced and led to three ships Saintes, Camperdown and Trafalgar eventually having them replaced by Mk V "utility" mountings, each controlled by a Simple Tachymetric Director (STD) mounted on the top of the gun crew shelter. A further refinement saw the removal of the depth charge equipment and single 40/60 mm Bofors gun from the quarterdeck, to be replaced by a Squid ahead throwing depth charge mortar. The after deckhouse was extended to contain a mortar handling room.

Its depth charge, however, fell inboard, lost its safety pin - arming it - and began rolling around on deck. In the ensuing minutes, Chief Boatswains Mate John MacKenzie (1886-1933) ran down the deck and, despite the rolling and pitching of the vessel, got a firm grip on the armed depth charge, put it on end, then sat on it to hold it in place until others could lash it down. Mackenzie was awarded the Medal of Honor for his actions. Remlik continued her patrols and escorted ships along the French coast through the remainder of World War I.

McCalla sighted a nearly stationary submarine bearing 090 true at a range of and accelerated with an intention to ram the submarine. The submarine submerged at 05:32 and turned sharply toward McCalla, which sighted a periscope off her port bow at a range of . McCalla began a depth charge attack at 05:37, dropping six and five depth charges set to explode at a depth of . Thirty seconds after the explosion of the last depth charge, McCalla′s crew heard another underwater explosion, then a second explosion 30 seconds after that, and finally a third explosion after another three minutes.

She rescued a Japanese soldier from a life raft on 16 December, then attacked a convoy in the Saipan-Massau traffic lanes four days later to sink cargo ship Tsuneshima Maru and scored damaging hits on another freighter. After two hours of dodging depth charges, she finally evaded her attackers, surfaced, and headed for Tingmon, the most likely port for the damaged cargo ship. Gato discovered a live depth charge on her deck at the same time two enemy escorts were sighted headed in her direction. She outran them while disposing of the depth charge by setting it adrift on a rubber raft.

By 7 September 1939, Léopard was no longer a part of the 2nd DCT and was assigned to the Western Command (Forces maritimes de l'Ouest) for convoy escort duties from October to May 1940 where she guarded convoys traveling between Gibraltar and Brest as well as Casablanca, French Morocco, and Le Verdon-sur-Mer. In early 1940, the ship had a British Type 123 ASDIC installed; in addition two depth-charge throwers were reinstalled, No. 3 gun removed, and her depth charge stowage reduced to a dozen 200 kg and eight 100 kg depth charges to improve her stability.

They reduced her maximum speed to , but increased her fuel storage to which raised her range to , and her crew to 234 ratings. Her troublesome depth charge chutes were sealed off and their machinery was removed; her stern had to be rebuilt to accommodate two rails at the stern, each with a dozen Mk VIIH heavy depth charges, plus an additional four stored below decks. Her two existing depth charge throwers were replaced by four improved Thornycroft Mk IV throwers. The ship carried a total of twenty-four Mk VII light depth charges for the throwers.

Again there was no explosion. As they approached to drop the third depth charge, the submarine exploded showering debris over Lolita and picking her up on the wave from the explosion. Subsequent investigations confirmed the crew of the submarine had triggered a self-destruct charge which severed the bow of the submarine killing both crew members. Members of Lolita's crew were satisfied that as they approached to drop the third depth charge, the crew of the submarine knew they had been spotted and as the 'game was up', they destroyed their submarine in an attempt to also destroy Lolita.

84, 86-7 Six 39-Yu torpedo tubes were fitted in two triple mountings; these tubes could be individually adjusted to spread out their salvos. Molotov and Kaganovich replaced their launchers with the more-modern 1-N mount during the war. A total of 96 KB or 164 Model 1912 mines could be carried by the first pair of ships. A pair of depth charge racks were mounted as well as four BMB-1 depth charge throwers. Twenty large BB-1 and thirty small BM-1 depth charges were carried although no sonar was fitted for the Project 26 and Project 26bis ships.

The ship was commissioned into service in the Royal Navy as HMS Keats (K482) under the command of Temporary/Acting Lieutenant Commander Neil Frederick Israel, RNR, on 19 October 1943 simultaneously with her transfer. She served on patrol and escort duty. On 27 January 1945, Keats shared credit with the British frigates and for a depth- charge attack that sank the German submarine in the St George's Channel at position . On 15 April 1945, she joined the British frigate in a depth-charge attack that sank the German submarine in the North Atlantic Ocean southwest of Ireland at position .

The group released Patriot Games, notable for the track "Mind of a Razor," which was subsequently released as a single and included a remix by the British extreme metal band, Napalm Death. Patriot Games reached number 60 in the UK Albums Chart in June 1993. More singles followed, including "Color Code" (Vinyl Solution, 1994) which featured remixes by Depth Charge - repaying the favour of Alkaline rapping for them on the "Depth Charge vs Silver Fox" (Silver Fox Records, 1991) single. A second album was never released, instead Vinyl Solution released a compilation of the group's singles.

Eight Mikura-class (御蔵) or Type B ocean defence ships were commissioned between October 1943 and 1945. They displaced 1,020 tons (full load) and carried three 4.7 in (120 mm) guns and six depth charge throwers, up to 120 depth charge and one 81 mm (3.2 in) mortar. The eight ships of the Mikura class served as convoy escorts during World War II. They were denoted "Type B" and were the third class of Kaibokan. The Mikuras, unlike the preceding Etorofu and Shimushu classes, were dedicated to the anti-aircraft (AA) and anti-submarine role.

Her stern was remodeled into an overhanging ramp configuration and the aft turbines were removed as well, and the space used to hold spare parts and repair equipment. The removal of these turbines reduced Kitakamis top speed from . All of Kitakamis remaining armaments were removed and replaced by two Type 89 127-mm AA guns and 67 Type 96 25-mm (twelve triple-mount and 31 single-mount) AA guns, two Type 13 air-search and one Type 22 surface-search radars. Two depth charge launching rails were installed at the stern and two depth charge throwers were also installed.

She sighted oil and air bubbles on the surface after the attack. After Deloraine dropped another pattern of depth charges, I-124 briefly broached at , exposing her bow and periscope, down 5 degrees by the stern and listing 20 degrees to port. Before I-124 fully submerged again, a depth charge from Deloraine′s port depth charge thrower landed from her periscope, and a U.S. Navy OS2U Kingfisher floatplane from the seaplane tender arrived on the scene and dropped a bomb at the same spot. When I-124 submerged, she settled on the seabed in of water.

On 20 November a Japanese midget submarine torpedoed and sank oiler in Ulithi Lagoon. Laying depth charge patterns at the site of swirls in the calm water of the lagoon, Rall was credited with sinking the submarine when debris and bodies surfaced.

The ships were equipped with six torpedo tubes in two triple mounts amidships. Although they were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The ships could carry 48 mines.

The ships were equipped with six torpedo tubes in two triple mounts amidships. Although they were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The ships could carry 56 mines.

In 1916, one of Cockatrices 4-inch guns was converted to a high-angle mount, allowing it to be used for anti-aircraft fire, but in 1918, this gun, together with both torpedo tubes, was removed to allow a heavy depth charge armament.

Many Canadian naval ships of World War II adopted an unofficial coat of arms, and Fredericton was no exception. Her badge, which was displayed on the front of the bridge, was a flying tiger dropping a depth charge on a U-boat.

The ships were equipped with six torpedo tubes in two triple mounts amidships. Although they were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The ships could carry 48 mines.

Noranda was singular in having a single 20 mm gun in the aft mount.Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes for the 40 depth charges they carried.

The I class was fitted with two above-water quintuple torpedo tube mounts for torpedoes.Whitley, p. 111 One depth charge rack and two throwers were fitted; 16 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p.

Subs are sunk if players touch a bomb, any enemy sub or boat, depth charge, mine, the ocean floor, torpedoes, or reef. Game ends if last sub is sunk. Polaris is essentially a naval version of Atari's Missile Command with near-identical gameplay.

18 Only eight Mark 9 torpedoes were carried. Sydney was fitted with a single depth charge rail at the stern, which held five Mk VII depth charges. Four 3-pounder (47-mm, 1.9-in) quick-firing Hotchkiss guns were carried as saluting guns.

Destroyers are fast multipurpose vessels used to harass enemy transports and disrupt sea routes. They have six hit points. They are most effective against submerged submarines with their multi-depth charge launcher which deals six hit points of damage to submerged submarines.

Whitley 2000, pp. 83–84.Brown 2007, p. 17. Later in the war, the depth charge armament was reduced, with a 10-charge pattern substituted (as this was found to be as effective as the earlier 14-charge pattern).Friedman 2009, p. 237.

68 It had a warhead and three speed/range settings: at ; at and at .Campbell, p. 263 They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 74–76 mines.

For anti-submarine operations, the ship has two five tube RBU-1200 anti-submarine rocket launchers. she also carries two depth charge (DC) racks and four DC projectors. There are two Mark 36 SRBOC 6-barrel decoy rocket launchers in the ship too.

For anti- submarine operations, the ship has two five tube RBU-1200 anti-submarine rocket launchers. she also carries two depth charge (DC) racks and four DC projectors. There are two Mark 36 SRBOC 6-barrel decoy rocket launchers in the ship too.

During World War II, her armament was increased. Her two 100 mm naval guns were supplemented by four 20 mm anti- aircraft guns.Janusz Piekałkiewicz, Sea War, 1939–1945, Historical Times, 1987, p. 350 She also retained her two 400 mm depth charge throwers.

Ships surrounded her. Sighting on Kirishima, she fired two bow tubes; one misfired, one missed. At 08:30, a destroyer immediately headed for the boat, which dived to to wait out the depth charge attack. At 08:46, periscope depth was again ordered.

The depth charge explosions shook up a second submarine, , that had been in the vicinity.Douglas et al., No Higher Purpose, p. 387 On 21 June 1942, Georgian was travelling down the coast of Newfoundland with a coastal convoy when she spotted a submarine.

In 1944 Baku was fitted with four depth charge launchers. Before leaving the Pacific Fleet, she exchanged her two 21-K mounts for ten 70-K AA guns.Hill, pp. 26, 29 She received a British Type 128 asdic system during the warBreyer, p.

The ships were equipped with six torpedo tubes in two triple mounts amidships. Although they were not provided with a sonar system for anti- submarine work, they were fitted with one or two pairs of depth charge throwers. The ships could carry 48 mines.

In March 1944, exactly one month later, she came under depth charge attack by the British escort destroyers , , and and the American escort destroyer . The submarine sank, at position , but all 51 crew members were rescued by the destroyers and became prisoners of war.

Hopping helped to drive off the marauder with numerous depth charge attacks, and then took Donnell in tow. Struggling for two days in heavy seas, she managed to bring her sister ship within range of British salvage ships off Ireland, which towed her into Derry.

During August, Pandora delivered supplies to the blockaded island of Malta. The attacked Pandora with a depth charge in September, but Pandora survived the attack. In January 1941, she sank three vessels: south of Sardinia, , and one other ship near Cape Spartivento in Calabria.

During the shooting of the film Tora! Tora! Tora!, the interior scenes of the were shot aboard the decommissioned , while the brief at sea gun fire and depth charge scene was actually the Camp (note the open rear gun mount in the film sequence).

The I class was fitted with two above-water quintuple torpedo tube mounts amidships for torpedoes.Whitley, p. 111 One depth charge rack and two throwers were fitted; 16 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p.

Hodges and Friedman p. 111 The ship was fitted with three quadruple torpedo-tube mounts for twelve 21 inch (533 mm) torpedoes, guided by the Mark 27 torpedo fire- control system. Depth charge roll-off racks were rigged on the stern of the ship.Friedman p.

The I class was fitted with two above-water quintuple torpedo tube mounts amidships for torpedoes.Whitley, p. 111 One depth charge rack and two throwers were fitted; 16 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p.

Colors: background, black; eye, orange and lemon yellow; cat, black with yellow outlines; eyeball, yellow; pupil, green; telescope, blue and white; depth charge, light blue with black markings. This insignia was used by the squadron until its disestablishment in 1945. Nickname: Black Cats, 1943–1945.

Lenton, pp. 154–55 'Y' gun was also removed to allow her depth charge stowage to be increased to at least 60 depth charges.Friedman, p. 237 In May 1944 she was transferred to the 11th Escort Group to support the Allied landings in Normandy.

The flotilla engaged the two rear escort trawlers and carried out a depth charge attack. The tanker was last seen to be on fire as the flotilla reformed off Alderney.Hichens, pp. 257–259 After this action Hichens was awarded a Bar to his DSO.

Some Royal Navy trawlers used for anti- submarine work during 1917 and 1918 had a thrower on the forecastle for a single depth charge, but there do not seem to be any records of it being used in action. Specialized depth charge throwers were developed to generate a wider dispersal pattern when used in conjunction with rack-deployed charges. The first of these was developed from a British Army trench mortar, 1277 were issued, 174 installed in auxiliaries during 1917 and 1918. The bombs they launched were too light to be truly effective; only one U-boat is known to have been sunk by them.

In later years, some of the 37 mm and 20 mm guns were removed. The third group, or Alava class, underwent modernisation in the early 1960s. Their forcecastle was lengthened by and the displacement increased to standard and at full load. The engines were rerated at and the ships had a maximum speed of , with fuel oil capacity of . Their armament was completely made over, with three single 76 mm/50 calibre guns, three 40 mm/70 calibre SP48 anti-aircraft guns, two side-launching racks for six anti-submarine (ASW) torpedoes, two Hedgehog ASW mortars, eight depth charge throwers and two depth charge racks.

When the war started in September 1939, Tigre was still assigned to the 4th DCT with her sisters Panthère and . She was assigned to the Western Command (Forces maritimes de l'Ouest) for convoy escort duties from October to May 1940 where she guarded convoys traveling between Gibraltar and Brest as well as Casablanca, French Morocco, and Le Verdon-sur-Mer. In November, the ship had a British Type 123 ASDIC installed; in addition two depth-charge throwers were reinstalled, No. 3 gun removed, and her depth charge stowage reduced to a dozen 200 kg and eight 100 kg depth charges to improve her stability.Jordan & Moulin, pp.

The standard armament for the class was two dual purpose guns, four 40 mm and ten 20 mm anti-aircraft guns, and three 21 inch (533 mm) torpedo tubes. It also carried two depth charge racks, eight K-gun depth charge projectors and one hedgehog projector as secondary weapons. The ships had a maximum speed of . left The most notable ship of this class was , which gained fame during the Battle of Leyte Gulf, where she, along with several other ships, engaged a number of cruisers and battleships of the Imperial Japanese Navy in a torpedo attack, where she was sunk after taking several hits.

Returning to the United States in the spring of 1918, he was assigned duty assisting in the fitting out of and became the ship's first executive officer when that transport was commissioned. Williamson then worked closely with the ship's commanding officer, Captain R. Drace White—another ordnance expert—in developing a workable depth-charge thrower for use on board transports, in the hope of providing them with some measure of protection of their own. Wiliamson's invention was a modified Lyle gun (one used for line-throwing in rescue operations). In the first test on August 16, 1918, the crude depth-charge projector hurled a 50-pound charge approximately 150 feet.

Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted, while the ship had an depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried. Whirlwind was fitted with a Type 276 surface warning radar on the ship's lattice foremast, together with a high-frequency direction finding (HF/DF) aerial, with a Type 291 air warning radar on a pole mast aft. A Type 285 fire control radar integrated with the ship's high-angle gun director, while the Hazemayer mount had an integrated Type 282 radar. Whirlwind had a crew of 179 officers and other ranks.

The ship had a main gun armament of four 4.7 inch (120 mm) QF Mk. IX guns, capable of elevating to an angle of 55 degrees, giving a degree of anti-aircraft capability. The close-in anti- aircraft armament for the class was one Hazemayer stabilised twin mount for the Bofors 40 mm gun and four twin Oerlikon 20 mm cannons. Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted (these were actually spare quintuple mounts with the centre tube removed), while the ship had an depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried.

The depth charge, or "dropping mine" as it was initially named, was first mooted in 1910, and developed into practicality when the British Royal Navy's Commander in Chief, Admiral of the Fleet Sir George Callaghan, requested its production in 1914. Design work was carried out by Herbert Taylor at HMS Vernon Torpedo and Mine School in Portsmouth, England, and the first effective depth charge, the "Type D", became available in January 1916. Anti-submarine vessels initially carried only two depth charges, to be released from a chute at the stern of the ship. The first success was the sinking of off Kerry, Ireland, on 22 March 1916 by the Q-ship .

A warning pip on her radar screen brought her into action against a diving Japanese submarine. Her sonar picked up the underwater enemy, and depth charge patterns exploded in the sea. Patterson sent her last depth charge barrage on its way, and five minutes later she was rewarded by a deep underseas boom, presumably silencing the enemy. This differs from other sources which state that the I-25 was sunk less than a year later by one or more of the destroyers , USS Patterson, which were involved in the naval engagement on 3 September 1943 off the New Hebrides islands approximately northeast of Espiritu Santo.

At a range of she sighted a periscope passing from starboard to port and tried to ram the submarine without success, then dropped a full pattern of depth charges, later seeing an oil slick on the surface. She made six more depth- charge attacks without success. Meanwhile, aboard I-36, a leak began in the forward torpedo room after more than 10 depth-charge explosions, and she launched two more kaitens from a depth of . After Sproston sighted the wake of an approaching kaiten 60 degrees off her port bow, she turned hard to port, causing the kaiten to pass down her port side.

124, The Naval VCs, Stephen Snelling This message reached nearby naval shipping, and within an hour the destroyers HMS Narwhal and HMS Buttercup arrived and began to tow the stricken ship back to land. During the night a depth charge accidentally exploded on board Farnborough and the tow was dropped. Campbell ordered the twelve men remaining aboard into a lifeboat and attempted to take a final survey of his vessel, only to be driven back by another exploding depth charge. On returning to the rail he discovered that Stuart had disobeyed his order and remained on board, to make sure his captain disembarked safely.

A nuclear depth bomb is the nuclear equivalent of the conventional depth charge, and can be used in anti-submarine warfare for attacking submerged submarines. The Royal Navy, Soviet Navy, and United States Navy had nuclear depth bombs in their arsenals at one point. United States conducted the Swordfish test of the RUR-5 ASROC nuclear depth bomb off San Diego in 1962. Due to the use of a nuclear warhead of much greater explosive power than that of the conventional depth charge, the nuclear depth bomb considerably increases the likelihood (to the point of near certainty) of the destruction of the attacked submarine.

On the night of 8/9 February 1944 Wild Goose first spotted a submarine which was sunk by depth charges from and Wild Goose, and then detected a second submarine which was sunk by Starling and Wild Goose. Meanwhile, spotted a third submarine, with Magpie coming up in support. Despite Kite being narrowly missed by an acoustic torpedo and very poor sonar conditions, which made tracking the submarine difficult, the two sloops delivered a series of depth charge attacks before being joined by Starling, which directed Magpie in a Hedgehog attack, which scored two hits, with Magpie and Starling following up with two further depth charge attacks.

A number of anti-submarine missiles also exist; these generally use the missile in order to deliver another weapon system such as a torpedo or depth charge to the location of the submarine, at which point the other weapon will conduct the underwater phase of the mission.

Early in the war, the No. 4 gun and the aft torpedo tubes were removed in exchange for four depth charge throwers and 18 depth charges. In addition 10 license-built Type 96 light AA guns were installed.Whitley, pp. 189–90 These changes increased their displacement to .

Kemp, pp. 75–76. On 18 December, Stanley spotted on the surface and gave chase. As the submarine dived, Blankney achieved firm ASDIC (sonar) contact and made three depth charge attacks. U-434 was severely damaged, but managed to surface and allow her crew escape before sinking.

Although attacked by gunfire and six separate depth charge runs by Japanese destroyers, Grayling succeeded 10 November in sinking a 4000-ton cargo ship southwest of Truk. She also destroyed an enemy schooner on 4 December before putting into Fremantle submarine base, Western Australia, 13 December.

Iroquois and Haida were just missed by torpedoes in an attack by . They in turn pursued the submarine in which by the end of the engagement, 678 depth charge explosions were counted without sinking the submarine.Rohwer, p. 412 Iroquois remained in British waters until the German surrender.

Refitted, she put out for action waters once more on 21 June on her third war patrol off Halmahera and Mindanao. She sank the IJN minelayer off Morotai on 29 June 1944, and again endured a heavy depth charge barrage as a result of her attack.

These replaced two of the DShKs, while the other two DShKs remained on the forward bridge wings.Verstyuk & Gordeyev, pp. 111–112 During the 1930s, she was also fitted with 42 depth charges and two K-1 paravanes. A pair of depth-charge throwers were added later.

For secondary armament for anti-aircraft (AA) defence, the Serrano class was fitted with a single /40 AA gun and three machine guns. The destroyers also had two triple-mounted torpedo tubes for torpedoes. They were fitted with two depth charge throwers for anti-submarine warfare (ASW).

46 Georgian had her 2-pounder gun replaced with a powered twin 20 mm mount in preparation for duties associated with the invasion of Normandy. Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

46 Thunder had her 2-pounder gun replaced with a powered twin 20 mm mount in preparation for duties associated with the invasion of Normandy. Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

55, "Akitsuki". Four torpedo tubes, plus depth charge throwers, were added as the requirements changed to a general-purpose warship. The heavier gun mountings and the extra super-firing mounting required a significantly larger hull than the Yūgumos to ensure stability. The class displaced 2,740 tons.

On 28 April, Snowden, , and left their screening positions to make fathometer readings at the head of an oil slick. Snowden made a reading at 560 feet. The trio dropped two depth charge patterns of 39 charges each. Two undersea explosions followed as U-488 died.

This was supplemented by a quadruple .50 in (12.7 mm) Vickers anti- aircraft machine gun mount. Four 3-pounder saluting guns completed the ship's gun armament. The initial anti-submarine armament consisted of two depth charge throwers and two rails, with a loadout of 40 depth charges.

She directed two more at a tanker, and one hit forward of the target's stack. Both Ariake Maru and Goyo Maru sank. Tambor went deep and remained on the bottom under depth charge attack from 04:18 to 13:15. Ten days later, she encountered another three-ship convoy.

Other sources write that she was deployed for training duties until 1970, then relegated to the role of accommodation ship before being scrapped in 1972. One of her twin 4-inch gun turrets and a depth charge thrower are preserved at the Clandestine Immigration and Naval Museum, Haifa.

2 During May and June 1942, the anti-aircraft armament was supplemented by six 20 mm Oerlikon guns. Another refit lasting from June to September 1943 saw a second 6-inch gun removed, the 4-inch armament reduced to two guns, and four hydraulic depth charge throwers installed.

She dropped a depth charge which temporarily disabled her sound gear. Once the cutter regained the contact, she dropped another pair of charges. Although they noted an oil slick, no definite confirmation of a "kill" was made. Travis apparently remained in these northern climes into the winter of 1942.

She decommissioned on 5 September, was designated as a target for depth charge and ordnance tests on 6 December, and was sold for scrapping to Connecticut Iron and Metal Company of New London on 15 April 1920. She was struck from the Naval Vessel Register on 13 August 1921.

Mjölner was modernised in 1953 and re-rated as a frigate. One of the main guns was removed, along with the triple torpedo tubes. A single Squid depth charge launcher was fitted to improve anti- submarine capabilities and the guns were upgraded. After the conversion, Mode retained minelaying capability.

Both missiles are dual-role; they can be armed with either a 400 mm anti-submarine torpedo or a nuclear depth charge. The Veter's increased range of approximately 100 kilometers was an impressive boost over its predecessor the SS-N-15 Starfish, which could only reach half the distance.

Over the next three hours Southard made five more depth-charge runs. After the last barrage, she sighted oil on the surface. She moved in to investigate. Upon reaching the oil slick, Southards crew could find no further evidence of damage, and she steamed on through the slick.

At the time the vessel was being shelled and torpedoed by the enemy submarine. Dunraven’s commanding officer, Capt. Gordon Campbell, RN, credited Noma’s arrival and prompt depth charge attack with saving his ship. Noma stood by Dunraven until two British destroyers arrived, and took off several wounded sailors.

The ship could also hunt submarines, and was equipped with sonar, depth charge throwers and rails. The vessel was also strong enough to be able to tow mine sweeping equipment. It was equipped with smoke generators so it could protect itself and other near-by vessels from the enemy.

Seadragon retired eastward. After dark while on the surface, recharging, she sighted a destroyer and attempted to slip away undetected. The destroyer spotlighted her. Seadragon went deep and worked her way eastward through two depth charge attacks. She spent the morning of 12 January evading Japanese patrol planes.

Gunner Illinus D. Jacobus, USN Standing by a depth charge on board USS Venetia (SP-431), at San Francisco, California, 26 February 1919. Note the flaming bombshell insignia on his collar. He is accompanied by a Chief Petty Officer. Her first contact with the enemy came that spring.

For defense against submarines, the carrier was fitted with six depth charge throwers and carried between six and ten depth charges for them.Lengerer 2010b, p. 119 Two Type 94 high-angle fire-control directors, one on each side of the ship, were fitted to control the Type 89 guns.

Whitley, p. 68 Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Enough depth charges were carried for either two or four patterns of 16 charges each.Whitley, p.

Whitley, p. 68 Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Sufficient depth charges were carried for either two or four patterns of sixteen charges each.Whitley, p.

Macpherson (1997), p. 19 For anti-aircraft purposes, the minesweeper was equipped with one QF 2-pounder Mark VIII and two single-mounted QF 20 mm Oerlikon guns. As a convoy escort, Quinte was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

Later four single 20 mm AA replaced the 0.5-inch machine guns, and the number of depth charge throwers was reduced to four. Type 291 radar was added. Deep load displacement rose to 1385–1400 tons; Their over-loading caused them to roll terribly in rough North Atlantic weather.

Pratt mounted a main battery of two single turret-mounted /38 caliber guns, one forward and one aft of the superstructure, to protect against surface and aerial threats, directed by the Mark 51 Gunnery Fire-Control System. In addition, she was armed with six Bofors anti-aircraft (AA) guns in two twin mounts, superfiring over the 5-inch guns, also controlled by the Mark 51 fire-control system, and ten single Oerlikon light AA guns. Equipped with three centerline torpedo tubes, the ship also carried two depth charge racks, eight K-gun depth-charge throwers and one Hedgehog spigot mortar as anti-submarine weapons. She was equipped with a QC series sonar and a SL-1 surface search radar.

The Atlanta-class cruisers were the only class of U.S. Navy cruisers commissioned during World War II to be armed with torpedo tubes, with eight torpedo tubes in two quad launchers. Although ships of the class were planned as destroyer flotilla leaders, the original design did not include anti-submarine armament such as sonar or a depth charge battery. In early 1942 along with anti-aircraft and radar upgrades these ships were fitted with sonar and the standard destroyer battery of 6 depth charge projectors and 2 stern mounted tracks. When the vessels were determined to be more valuable as protection against aircraft, the projectors were removed but the tracks were retained.

Following shakedown along the California coast, Seahorse sailed to Pearl Harbor, Territory of Hawaii and, on 3 August 1943, got underway for her maiden war patrol, conducted off the Palau Islands. On the morning of 29 August, while the submarine was gaining attack position on a Japanese convoy, she was detected by escorting destroyers and suffered minor damage from a depth charge attack. Seahorse scored three torpedo hits on a transport on 6 September, and then went deep to evade a depth charge attack that caused severe leaks and put her number four torpedo tube out of commission. A week later, she expended eight torpedoes in an unsuccessful attempt to sink a large tanker.

The ship was commissioned into service in the Royal Navy as the frigate HMS Gould (K476) on 18 September 1943 simultaneously with her transfer. She served on convoy escort duty in the North Atlantic Ocean. On 26 February 1944, Gould joined the British frigates and in a depth-charge attack that sank the in the North Atlantic at position . On 29 February 1944, Gould was operating as part of the First Escort Group when she, Affleck, Gore, and the British frigate detected the in the North Atlantic north-northeast of the Azores and began a depth-charge attack which continued through the night and into 1 March 1944, the four frigates dropping a combined 104 depth charges.

Their anti-aircraft armament consisted of four Modèle 1927 guns in single mounts positioned amidships and two twin mounts for Hotchkiss Modèle 1929 anti-aircraft machineguns on the forecastle deck abreast the bridge. The ships carried two above-water twin mounts for torpedo tubes, one pair on each broadside between the pairs of funnels as well as one triple mount aft of the rear pair of funnels. A pair of depth charge chutes were built into their stern; these housed a total of sixteen depth charges, with eight more in reserve. They were also fitted with a pair of depth-charge throwers, one on each broadside abreast the aft funnels, for which they carried a dozen depth charges.

At launch, the destroyer was fitted with six guns in three twin turrets, two guns in a twin turret, six single Oerlikon anti- aircraft guns, a 2-pounder quadruple pom pom, a 4-tube torpedo launcher (with a payload of four torpedoes), and two depth charge throwers (with a magazine of 46 charges). Aruntas radar suite consisted of an SG1, an SG4, a 285P4, and a 253P. In September 1945, all six Oerlikons were replaced with single Bofors anti-aircraft guns. During a modernisation starting in 1949, the aft 4.7-inch gun turret and the depth charge throwers were removed, with the freed-up deck space used to install a Squid anti-submarine mortar.

An anti-submarine missile is a standoff anti-submarine weapon. Often a variant of anti-ship missile designs an anti-submarine systems typically use a jet or rocket engine, to deliver: an explosive warhead aimed directly at a submarine; a depth charge, or; a homing torpedo that is carried from a launch ship, or other platform, to the vicinity of a target. Ikara, an Australian-designed missile used by several navies between the 1960s and 1990s; a rocket-parachute delivery system carried an acoustic torpedo up to 10 nautical miles (19 km) after launch. A variant re-designed in the UK and used by the Royal Navy could deliver a nuclear depth charge.

Just before 03:00, as Chicago was leaving the harbour, the lookouts spotted a submarine periscope passing alongside the cruiser. At 03:01, the indicator loop registered an inbound signal; M-21 was re-entering Sydney Harbour after recovering from the attack four hours previously. fired on M-21 in Neutral Bay at 03:50, and at 05:00, three auxiliary patrol boats—HMAS Steady Hour, Sea Mist, and Yarroma—spotted the submarine's conning tower in Taylors Bay. The patrol boats had set their depth charge fuses to , and when Sea Mist passed over where the submarine had just submerged and dropped a depth charge, she had only five seconds to clear the area.

During World War I, the Continental Works built munitions for the war effort, including depth charge casings, and after the war, it increasingly turned to the manufacture of gas mains and large-diameter welded water pipes. The company's assets were liquidated in 1928, following the retirement of the founder's son.

Patrolling off the Japanese homeland, she attacked a destroyer on 18 August, and received a punishing depth charge attack. Three days later, she launched a spread of torpedoes, three of which hit a freighter and one of which hit an escort. Explosions were seen, but the sinking could not be confirmed.

Two sources disagree on the number of casualties when Mordenwood went down, but place the number at either 21 or 31.Tennent (p. 51) reports 31 were killed; Helgason reports 21 killed. Escorting destroyers launched a depth charge attack on U-29 but did not succeed in damaging the U-boat.

The submarine dove down, and another depth charge attack followed. After about 50 depth charges were dropped by both destroyers, at around 19:30, the submarine surfaced again, and was immediately fired upon by both destroyers. One shell hit the conning tower, forcing the crew to start abandoning the boat.Hoyt, p.

Papadorus and General Lin do not wait for Princess Electra to return with the hostages and set sail for Albania. Carter, Shorty, Xenia and a US sailor give chase in an experimental US navy hydrofoil. They are fired upon and Shorty is killed. Carter destroys the yacht with depth charge.

On the night of March 19, Malachite sighted a cruiser escorted by several destroyers. At 01:19 she launched two torpedoes but they both miss. Malachite was forced to dive and undergo lengthy depth charge attack. From 10 to 18 April 1941 she was posted northeast of the Gulf of Sollum.

Macpherson, p. 19 For anti-aircraft purposes, the minesweepers were equipped with one quick-firing (QF) 2-pounder Mark VIII and up to three single-mounted QF 20 mm Oerlikon guns. As a convoy escort, Chignecto was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

A pair of reload torpedoes was provided for each mount.Whitley, p. 68 Georg Thiele had four depth charge throwers mounted on the sides of her rear deckhouse, which were supplemented by six racks for individual depth charges on the sides of the stern, with either 32 or 64 charges carried.Whitley, p.

The accompanying cargo ship tried to ram the submarine, and a combined aerial attack by patrol bombers and a sustained depth charge attack forced Ray to run deep. Three days later, following an unsuccessful attack on two cargo ships escorted by a Chidori-class torpedo boat, Ray returned to Fremantle.

The quarterdeck gun was later moved to the aft deck superstructure to make room for depth charge roller tracks. The 4"/50 guns had limited elevation and could not fire at aircraft. A 3"/23 caliber gun was installed for anti-aircraft warfare defense, along with two .50 caliber machine guns.

Cassells, The Capital Ships, p. 139 Two 21-inch torpedo tubes were fitted, with a payload of seven torpedoes carried. Two hydraulic-release depth charge chutes were carried for anti-submarine warfare. A single 12-pounder 8-cwt field gun and four 3-pounder Hotchkiss saluting guns rounded out the armament.

Campbell, p. 349 The Italians intended to provide them with a sonar system of an unknown type for anti-submarine work. They would have been fitted with a pair of depth charge throwers and 64 depth charges. The Comandanti Medaglie d'Oros would have been able carry 52 mines as well.

Three depth charges were released, the third of which caused the sub to list away from the attack, side-slipping into the water. A fourth depth charge was believed to have hit the stern, then about 20 feet below the surface. The results of these attacks, however, were never confirmed.

It missed and alerted an escort which gave Tautog a severe depth charge attack. Five explosions close aboard caused extensive minor damage. The submarine returned to Fremantle ten days later for repair and refit. She was credited with one ship of 5,100 tons; postwar, it was reduced to 4,000 tons.

185 Screening Convoy HX 222 with Escort Group C-1Rohwer&Hummelchen; (1992) p.188 on 17 January 1943, the destroyer attacked the U-boat with a depth charge barrage, only to suffer damage from her own charges. Limping to Plymouth for repairs soon thereafter, the ship remained there until November 1943.

While picked up survivors from the sunken destroyer escort, Whitehurst, detached from TU 77.7.1 to conduct a search, soon picked up a contact. At general quarters, the destroyer escort conducted three attacks without conclusive results. When Whitehurst pressed home a fourth depth charge attack, her efforts were crowned with success.

Her anti-aircraft (AA) armament consisted of four guns in four single mounts amidships and two quadruple mounts for Vickers AA machineguns. The Vasilefs Georgios class carried eight above-water torpedo tubes in two quadruple mounts. They had two depth charge launchers and a single rack for their 17 depth charges.

From August–September, Ōi and Kitakami were converted into fast transports. Their 10 quadruple torpedo tubes were reduced to six, for a total of 24 tubes. They were equipped with two and fitted with two triple-mount Type 96 25-mm AA guns. Depth charge launching rails were also installed.

During those cruises, she conducted depth charge attacks on three sound contacts, but obtained no evidence of success. A week after her last hunter- killer cruise on 30 April 1945, Bright sailed from Eniwetok for Saipan, where she reported to the Commander, Task Force (TF) 51 for duty in the Escort Pool.

Two more depth charges were fired, but a third depth charge exploded in its thrower. The 135 kg trotyl charge completely tearing the wooden ship apart. 26 men died and 15 were saved. The ship's commander, Lieutenant Esra Terä, was mortally wounded, but managed to utter some last words: "Let us sing, boys".

By this time the ship carried a Type 291 air-warning radar and an American SG-1 surface-search radar. She was armed with three 4.7-inch guns, four Bofors light AA guns, one quadruple 21-inch torpedo mount, four depth charge throwers and two rails for 70 depth charges.English 1993, p.

The Whynatte Bomb is a cocktail that is mixed by dropping a shot of Jägermeister into a glass of Whynatte Latte.[ Whynatte Bomb Buzzworthy] Rolling Stone Magazine, April 2008. The terms “depth charge” and “bomb shot” refer to cocktails that are made by dropping a shot glass filled with liquor into another drink.

30–31 Sherbrooke remained astern of the convoy aiding the ships torpedoed by U-96, and rescued all but one of the crew of the sinking Svene and Elisabeth van Belgie. The remaining escorts counter-attacked, and depth charge damage forced U-659 and U-218 to return to port.Blair 1998 p.

The guns were 45 years old and had no fire-control system. For anti- aircraft warfare, the ship was fitted with two single 20 cwt guns. Depth charge chutes and machine guns rounded out the offensive weaponry of the ship. Additionally, more bulkheads were added and a new naval bridge was installed.

She immediately went right full rudder, all ahead at flank speed. In another two minutes, two torpedoes plowed into each of the two targets—four explosions within 20 seconds. At 22:05, the enemy frigate began random depth charge attacks. Three minutes later, the smaller of the two targets sank by the stern.

She was fitted with two above-water quadruple torpedo tube mounts for 21-inch torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p. 141 By mid-1940, this had increased to 44 depth charges.

Aberdeen was fitted with the originally planned third 4-inch gun in 1939, with four Oerlikon 20 mm cannon added during the war. The ship's depth charge loading increased from 15 to 60–90 during the war, while a Hedgehog anti-submarine mortar was fitted in 1942, replacing the forward 4-inch gun.

Thereafter, sound conditions were unfavorable due to the depth charge turbulence which was extreme in the shallow water 40 fathoms (73 m). After 16 minutes, the search was abandoned. No casualties or hits resulted from enemy action. The next day, while steaming off Fedhala Point, Wilkes sighted a French destroyer emerging from Casablanca.

At 20:00, reported the same fate and sank in less than one hour. illuminated to open fire on a surfaced submarine and also made a depth charge attack with negative results. The next day, Wilkes escorted Augusta into Casablanca. She then returned toward the patrol area and resumed patrolling her assigned station.

The submarine was attacked by the German minesweepers M3 and M4. One depth charge exploded just above Orzel, knocking out all lights and sending it crashing into the sea bed. The submarine escaped that night under the cover of darkness. Faced with an oil leak, Kłoczkowski chose to seek refuge in Tallinn, Estonia.

The wounded were placed in rafts and at 14:50, the order to abandon ship was given. The amidships section was entirely underwater at that time. There was a single ripple like a depth charge explosion and the ship sank at 14:59. Brownson suffered the loss of 108 of her crew.

In the evening of 12 August Oak Hill reported a periscope on her port quarter and, eight minutes later, a torpedo wake 2,000 yards astern of her. Thomas F. Nickel made several depth charge attacks and then lost contact. Both ships arrived safely at Leyte on the 15th, the day hostilities ended.

208–9 One Type 94 depth charge launcher was also carried. After the lead vessel Chidori was completed, it was discovered during trials that her center of gravity was too high and that she was overweight. To compensate, bulges fitted to the rest of the class. However, this proved to be insufficient.

Her Type 96 25 mm AA guns were increased to a total of 11 triple- mounts and 17 single-mounts. Her torpedo launchers were replaced by two quadruple launchers mounted in the stern, along with two depth charge rails. She was given a complete set of the latest radar, hydrophones and sonar.

Oberrender mounted a main battery of two single turret-mounted /38 caliber guns, one forward and one aft of the superstructure, to protect against surface and aerial threats, directed by the Mark 51 Gunnery Fire-Control System. She also carried four Bofors anti-aircraft (AA) guns in two twin mounts, superfiring over the 5-inch guns, also controlled by the Mark 51 fire-control system, and ten single Oerlikon light AA guns. Equipped with three centerline torpedo tubes, the ship also carried two depth charge racks, eight K-gun depth-charge throwers and one Hedgehog spigot mortar as anti-submarine weapons. She was equipped with a QC series sonar, SL-1 surface search radar, and SA-2 air search radar.

Another shell struck a depth charge on the forward K-gun, blowing the charge apart and scattering burning TNT as far aft as the fantail; shrapnel from this hit set another depth charge afire, and ruptured four others. The fourth hit on the starboard side, two feet below the main deck; shrapnel from this hit caused extensive damage to the motor whaleboat. The last shell to hit struck about two feet below the waterline, but did not penetrate. The air bursts near the bridge rendered the SG radar inoperative. Immediately, one of the ship's 3-inch mounts opened up to return the shore battery's fire, expending both hoppers full (ten rounds); these rounds landed in the target area but did not slow the enemy's rate of fire.

O'Flaherty mounted a main battery of two single turret-mounted 5-inch/38 caliber guns, one forward and one aft of the superstructure, to protect against surface and aerial threats, directed by the Mark 51 Gunnery Fire-Control System. In addition, she mounted two twin 40 mm Bofors anti-aircraft (AA) guns, superfiring over the 5-inch guns, and ten single 20 mm Oerlikon AA cannon, also controlled by the Mark 51 fire-control system. Equipped with triple-mounted torpedo tubes, the ship also carried two depth charge racks, eight K-gun depth-charge throwers and one Hedgehog spigot mortar as anti-submarine weapons. She was equipped with QC series sonar, SL surface search radar, and SA series air search radar.

The depth charges were also not as effective as one might think at sinking a submarine - only a very close detonation would sink a submarine, and the problems of scoring a direct hit meant that a submarine was more often damaged then destroyed by depth charges. After World War I depth charge throwers were developed, which could hurl depth charges some off the side of a ship. These were a significant improvement over the old method, permitting the use of large 'patterns' of up to 10 depth charges from the throwers and stern depth charge rails used together. However they still required a ship to pass very close to a submarine, which entailed loss of sonar (ASDIC) contact during the final stages of the approach.

Their anti-aircraft armament consisted of four Modèle 1927 guns in single mounts positioned amidships and two twin mounts for Hotchkiss Modèle 1929 anti-aircraft machineguns on the forecastle deck abreast the bridge. The ships carried two above-water twin mounts for torpedo tubes, one pair on each broadside between each pair of funnels as well as one triple mount aft of the rear pair of funnels able to traverse to both sides. A pair of depth charge chutes were built into their stern; these housed a total of sixteen depth charges, with eight more in reserve. They were also fitted with a pair of depth-charge throwers, one on each broadside abreast the aft funnels, for which they carried a dozen depth charges.

The next day, a depth charge from the deck of William D. Porter fell into the rough sea and exploded, causing Iowa and the other escort ships to take evasive maneuvers under the assumption that the task force had come under torpedo attack by a German U-boat. Ships logs from William D. Porter and Iowa do not mention a lost depth charge nor a U-boat search on 13 November. Both logs do mention that William D. Porter experienced a boiler tube failure on #3 boiler causing the ship to fall out of position in the formation until #4 boiler was brought online. On 14 November, at Roosevelt's request, Iowa conducted an anti-aircraft drill to demonstrate her ability to defend herself.

Their anti-aircraft (AA) armament consisted of four Modèle 1927 AA guns in single mounts positioned amidships and two twin mounts for Hotchkiss Modèle 1929 AA machine guns on the forecastle deck abreast the bridge. The ships carried two above- water twin mounts for torpedo tubes, one pair on each broadside between each pair of funnels as well as one triple mount aft of the rear pair of funnels able to traverse to both sides. A pair of depth charge chutes were built into their stern; these housed a total of sixteen depth charges, with eight more in reserve. They were also fitted with a pair of depth-charge throwers, one on each broadside abreast the aft funnels, for which they carried a dozen depth charges.

"Swordfish" nuclear weapons test. Razorback was submerged from the explosion. On 11 May 1962, Razorback participated in the "SWORDFISH" nuclear weapons test, a test of the ASROC (Anti-Submarine Rocket). An ASROC with a 10-kiloton, W44 nuclear depth charge warhead was fired by the destroyer at a target raft from a range of .

The first torpedo missed, but the second hit forward of the bridge, sinking the converted gunboat Kongōsan Maru. The submarine was then subjected to a six- hour depth charge attack before she could clear the area. For this patrol Trout received her second Presidential Unit Citation and Fenno his second award of the Navy Cross.

Kohler was part of a team led by oceanographer Robert Ballard which explored and mapped the wreck of the U-166 in the summer of 2014 with remotely operated vehicles and determined that the bow of the submarine was destroyed, apparently by a depth charge which caused an internal explosion of the submarine's own torpedoes.

241 The 'Y' gun was later removed to compensate for the additional depth charges added.Whitley, p. 100 When Boadicea was converted into an escort destroyer at the end of 1943, her 'A' gun was replaced by a Hedgehog anti-submarine spigot mortar and additional depth charge stowage replaced the 12-pounder high-angle gun.English, p.

Bred by Justo F Fernandez in Mexico, Beduino foaled in 1968 and was a gray son of Romany Royal. His dam was a daughter of Rejected named Jo-Ann-Cat. His second dam was a daughter of Depth Charge (TB). Beduino raced for three years on the racetracks in Mexico, from 1970 to 1972.

Nields, temporarily with Destroyer Division 21, was one of the ships to answer the call. Soon afterward, dropped the first depth charge pattern. On the morning of the 15th, oil slicks were spotted, but sound contact was lost. Another search plane sighted the submarine, now surfaced, ten miles away and running north toward southern France.

Two QF 6-pounder Hotchkiss guns were fitted on the wings of her bridge to deal with U-boats at short ranges. The ship also received a HF/DF radio direction finder mounted on a pole mainmast.Lenton, pp. 160–61 'Y' gun was also removed to allow her depth charge stowage to be increased.

On air-sea rescue patrol 6 June 1942, she made three depth charge runs on an underwater sound contact. A Japanese submarine violently broached the surface revealing its conning tower and propeller, then disappeared. Gillis was unable to regain contact. She was credited with damaging this underseas raider in the combat area off Umak Island.

And just as they were leaving New Caledonia the bashful Parker is kissed by Bouchard and the lightheaded Parker sets off a depth charge which destroys Le Clerc's dock and cargo again. But rather than marry Monet to pay for the new damage, McHale and crew immediately scramble to get out of New Caledonia.

Submarines in Lost Admiral Returns are modeled after German U-Boats. They have six hit points which makes them very vulnerable to a destroyer's depth charge attack. Because of this a suggested tactic is to surface the sub. When surfaced, the destroyer's guns deal four points of damage, giving the sub a chance to escape.

With Underground Resistance, he released the singles "Nocturbulous Behavior" and "Dark Energy". He also featured on the Submerge label compilation Depth Charge, Vol. 3, and produced tracks for Underground Resistance's 1998 full-length Interstellar Fugitive. James' debut album My Sol Dark Direction was released to critical acclaim including both classics and new, unreleased productions.

The standard torpedo for the Type 36B destroyers was the G7a torpedo.Whitley, p. 68 It had a warhead and three speed range settings: at ; at and at .Campbell, p. 263 They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

Two 3-inch guns were fitted on the upper deck amidships, along with several light anti-aircraft machine guns. Two depth charge chutes were added to the stern, but no anti-submarine detection equipment was supplied. The three original stacks were replaced with two shorter, oval ones, which gave a decidedly more cruiser like appearance.

Paul Jacobi carried eight above- water torpedo tubes in two power-operated mounts. A pair of reload torpedoes were provided for each mount.Whitley, p. 68 Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern.

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In 2005 the ride was removed in to make room for the construction of Stealth. Flying Fish was reinstalled in 2007. It is located in the Amity area between Depth Charge and Tidal Wave. The ride opened on March 10, 2007 with a new colour scheme, on- ride camera, and new lap bar restraints.

The class were modernised between 1954 and 1955 and re-rated as frigates. One of the main guns was removed, along with the triple torpedo tube mount. A single Squid depth charge launcher was fitted to improve anti-submarine capabilities and the guns were upgraded. The class remained in service in this capacity until decommissioning.

She continued to suffer from engine problems crossing the Atlantic, and on 17 September a depth charge-armed Swordfish crashed into her island on landing. After 75 minutes, they managed to safely drop the charge overboard. Arriving at Greenock on 23 June, she entered dock for modifications and to lengthen her wooden flight deck.

The ships carried eight torpedo tubes in two power-operated mounts. A pair of reload torpedoes was provided for each mount. They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines.

One illuminated Sculpin with a searchlight as both commenced heavy fire with deck guns. The submarine went deep as the enemy depth charge attack and prolonged sonar search continued. The following night, she scored two hits on a tanker, with no sinking credited, and none confirmed postwar. For her 52-day patrol, Sculpin had nothing to show.

So much water entered that the submarine was forced to run at high speed to maintain depth. This made tracking easy for the Japanese sonar. A second depth charge attack knocked out Sculpins sonar. The submarine's commanding officer, Commander Fred Connaway, decided to surface and give the crew of the doomed vessel a chance for survival.

On 12 May 1943, near Holtz Bay, Attu, her periscope was sighted by American destroyers, and , who immediately opened fire. I-31 dove quickly but not before Edwards scored hits. The destroyers quickly made sonar contact and began a series of depth charge attacks until, after surviving for 10 hours, she was sunk by Frazier on 13 May.

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When she undocked on 22 April, the ship's secondary battery comprised six 15.5 cm guns, twenty-four 12.7 cm guns, one hundred and thirty 25 mm guns, and four 13.2 mm machine guns. She also received new radars (which were still primitive compared to American equipment),Padfield, p. 285 and depth-charge rails were installed on her fantail.

Later, the Japanese Army commissioned two small aircraft carriers intended for coastal antisubmarine (ASW) duties. The spotter's position on the Ka-1 was modified to carry one small depth charge. Ka-1 ASW autogyros operated from shore bases as well as the two small carriers. They appear to have been responsible for at least one submarine sinking.

Seven depth charges were dropped, one which hit the radar array, wounding one crew member, and another landed on the submarine's deck, although it was not noticed at the time. The submarine dived and, when at depth, the depth charge exploded, destroying the bridge and causing serious damage. The boat arrived at Algiers on 14 September for repairs.

At some point, the ship was converted to an escort destroyer. 'A' gun was replaced by a Hedgehog anti-submarine spigot mortar and additional depth charge stowage replaced the 12-pounder high-angle gun. A Type 286 short-range surface search radar was fitted as well as a HF/DF radio direction finder mounted on a pole mainmast.

He took U-21 between two of the escorting destroyers and briefly used his periscope to gauge the speed and course of the transports before firing two torpedoes and diving. Hersing reported both torpedoes hit and the destroyers immediately rushed to begin their depth charge attacks. After a five-hour hunt, the destroyers withdrew to rejoin the convoy.Gray, pp.

The ships were also fitted with a QF 2-pounder Mark VIII gun aft and were eventually fitted with single- mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes to deploy the 40 depth charges they carried.

The ship also carried three anti-submarine mortars (one Hedgehog and two Squids) as well as depth charge throwers. Barcoo was laid down by the Cockatoo Docks and Engineering Company, Ltd., Sydney on 21 October 1942. The ship was launched on 26 August of the following year by the wife of Richard Keane, the Minister for Trade and Customs.

Gannon (1998) pp.197-201 At midday, Pink commanded by Lieutenant Atkinson made a firm ASDIC contact ahead of her small convoy proceeding separately. Pink spent 90 minutes making five depth charge and hedgehog attacks. Pink received post-war credit for destruction of U-192; but later analysis concluded the victim, U-358, returned to base after being damaged.

The 40-millimetre guns were replaced by two German AA guns and a pair of French M1929 Hotchkiss machineguns were added in 1939. Two Italian depth charge throwers were later installed. During World War II, the 76-millimetre gun was replaced by four AA guns. In 1943, the two ships were equipped with a German S-Gerät sonar.

On a clear day and a calm sea, torpedo tracks were easily sighted heading for the troop ships. Khedive Ismail was hit and sank in minutes. Petard responded with a number of depth charge attacks, one of which, like the submarine, was close to the main group of survivors; these attacks were initially unsuccessful.Connell, 1976, p.

Besides, four Type 76A dual 37 mm AA guns are also there. For anti-submarine operations, the ship has two 6-tube Type 3200 ASW rocket launchers and two depth charge (DC) racks and four DC projectors. Type 946/PJ-46 15-barrel decoy rocket launchers are also in the ship for anti-ship missile defence.

Over the period of the next three and one-half hours, she delivered five separate depth charge attacks against the submarine. At 14:43, the Japanese submarine , surfaced. Saufley's five-inch (127 mm) batteries and machine guns opened up on the conning tower of the submarine. A PBY flying boat moved in and dropped two depth charges.

The ship's primary armament consisted of eight C-802 anti-ship missiles. Her secondary armament consisted of two twin 100 mm guns, mounted on the bow and stern. Anti-aircraft armament consisted of four twin 37mm guns. For anti-submarine warfare, she was equipped with two RBU-1200 anti-submarine rocket launchers and two BMB-2 depth charge mortars.

They were also equipped with six torpedo tubes in two triple mounts and two depth charge throwers.Chesneau, p. 401 The second group differed only slightly from the first. Their displacement was greater, at standard and at full load and they had greater bunkerage for the fuel oil, with capacity for , which gave them a range of at .

F. W. Fenno. On the night of 2 June Guitarro made a moonlight periscope approach and launched two torpedoes at frigate Awaii, sinking her immediately. The submarine was then forced down to avoid depth charge, torpedo, and aircraft attacks. She made port at Darwin, Australia, 19 June, and 2 days later sailed for Fremantle, arriving 27 June 1944.

On May 1917 Bars left port on her last patrol, and did not return. It is suggested by some that she was sunk in a depth-charge attack by German patrol boats on 28 May 1917, though other sources suggest she was lost in a minefield off Norrköping.Bars at deepstorm.ru (Russian) The actual cause of her loss is unknown.

King Edward sank within three minutes. U-356 was detected by the escorts and was sunk with no survivors following depth charge attacks by St. Laurent, Chilliwack, Battleford and Napanee. At dawn, Toward rescued 25 men from the King Edward and assisted Napanee, recovering all but one of Soekaboemis crew. Soekaboemi remained afloat when abandoned at 07:30.

On 7 April 1944, while operating with a hunter-killer task unit composed of DD’s and DE’s, Ordronaux spotted a German submarine south of Nova Scotia. USS made first contact by sounding and with USS made several depth charge attacks forcing the submarine to surface. Both ships opened fire, and Champlin rammed the sub. and Ordronaux captured 28 survivors.

Mode was modernised in 1953 and re-rated as a frigate. One of the main guns was removed, along with the triple torpedo tubes. Instead a single Squid depth charge launcher was fitted to improve anti-submarine capabilities and the guns were upgraded to provide greater anti-aircraft protection. After the conversion, Mode retained minelaying capability.

Munin was modernised in 1953 and re- rated as a frigate. One of the main guns was removed, along with the triple torpedo tubes. Instead a single Squid depth charge launcher was fitted to improve anti-submarine capabilities and the guns were upgraded to provide greater anti-aircraft protection. After the conversion, Munin retained minelaying capability.

The Tribals were not intended as anti-submarine ships, but they were provided with ASDIC, one depth charge rack and two throwers for self-defence, although the throwers were not mounted in all ships;Hodges 1971, pp. 30–31, 40 Twenty depth charges were the peacetime allotment, but this increased to 30 during wartime.English 2001, p. 15.

The Khamronsin class is armed with one OTO Melara /62 Mod 7 gun mounted forward and twin-mounted Breda /70 guns atop the aft superstructure. The corvettes also mount two triple Plessey PMW49A torpedo tubes for Sting Ray torpedoes and two machine guns. A Mk.6 depth charge launcher and naval mines can also be installed aboard the ships.

The ships were also fitted with a QF 2-pounder Mark VIII gun aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes to deploy the 40 depth charges they carried.

Both torpedoes struck and Waterton began to settle. Vison along with a Consolidated Canso R of 117 Squadron attacked the submarine, with Vison dropping one depth charge initially, followed by a further dozen. Contact was lost and U-106 slipped away. Vison recovered the entire crew of Waterton and continued the escort of the remaining ship.

In addition the intended pair of quadruple mounts for the 0.5 inch Vickers Mark III machine gun were replaced by a pair of Oerlikon light AA guns. The Turkish ships were fitted with a single above-water quadruple torpedo tube mount amidships for torpedoes.Whitley, p. 111 One depth charge rack and two throwers were fitted for 35 depth charges.

In Davis and Jouett the main armament was replaced by five dual-purpose guns in two twin and one single mount. Later in these two, the torpedo armament was eliminated along with two K-guns and one depth charge rack to maximize the number of 40 mm guns at 14, placed in two quad mounts and three twin mounts.

On 31 August 1944, she sighted her first enemy ships, an inter-island steamer with two escorts. Scabbardfish fired two spreads of three torpedoes but all missed. After suffering a light depth charge attack, she surfaced and continued steaming west. On 19 September, west of Okinawa, she damaged the 5500-ton submarine tender with two hits.

On 17 February, she underwent a depth charge attack, but suffered no damage. Aspro torpedoed a freighter on 4 March, and the subsequent explosion shook the submarine violently. However, the Japanese vessel was merely damaged, not sunk. The rest of this patrol passed uneventfully, and Aspro retired to Pearl Harbor on 28 March after 54 days at sea.

The anti submarine attack lasted from 10:30 until 18:30 and there were 80 to 90 depth charge explosions. The sunken Soviet ship was the 1,975-ton cargo Uralets (also known as Uralles).Antony Preston, Warship 2001-2002, Conway Maritime Press, 2001. p. 76Richard Compton-Hall, Submarines at War 1939-1945, Periscope Publishing, 2004, p.

ORP Kaszub firing a RBU-6000 rocket depth charge. The homing torpedo has largely replaced the anti-submarine mortar in naval combat, although several examples still exist. The British Limbo system, with three gyro-stabilized barrels, fires 350-pound projectiles to a range of . It remained in service with many British and Commonwealth navies until the 1980s.

The ships were also fitted with a QF 2-pounder Mark VIII gun aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes to deploy the 40 depth charges they carried.

Haggard made a sonar contact at . at 21:45 and began dropping depth charges. The other destroyers joined in, carrying out a series of depth-charge attacks that continued for several hours. The following morning, the destroyers found evidence of the destruction of I-176 – fragments of sandalwood and cork and paper marked with Japanese words.

The ships were armed with one gun, one Bofors guns and two Madsen anti-aircraft cannon. The vessel had three mine dropping rails, and could carry about 100 mines. The ship could also hunt submarines, and was equipped with hydrophones, depth charge throwers and rails. The vessel was also strong enough to be able to tow minesweeping equipment.

During the ensuing period of conversion, the Coast Guard vessel was reconfigured as a patrol cutter. She now sported a main battery of a single-mount 5-inch gun, a hedgehog, a twin 40-millimeter mount, and two 20-millimeter guns, in addition to depth charge tracks and projectors and was reclassified once again as WPG-37.

After four and half minutes after torpedo launch, escorts went on offensive. Axum was at 65 meters when the depth charge attack started, and captain Ferrini took the boat down to 100 meters. The hunt continued for roughly 2 hours and 60 depth charges were thrown. At 22:50 Axum surfaced to observe the damage and assess the situation.

She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge.Whitley, pp.

The 40-millimetre guns were replaced by two German AA guns and a pair of French M1929 Hotchkiss machineguns were added in 1939. Two Italian depth charge throwers were later installed. During World War II, the 76-millimetre gun was replaced by four AA guns. In 1943, the two ships were equipped with a German S-Gerät sonar.

Karukaya was refitted in the winter of 1941–1942, with one of its 120 mm guns being replaced by six 25 mm Type 96 anti-aircraft cannon in two triple mounts, together with several machine guns. The destroyer's minelaying and sweeping gear was removed to allow four depth charge throwers and up to 48 depth charges to be fitted.

In one incident a distraught officer rushed to report, "Captain, we've just dropped a depth charge over the stern!" "Well, pick it up and put it back," was Spruance's measured response.Tuohy, William. 2007. American's Fighting Admirals: Winning the War at Sea in World War II He began attendance at the Naval War College in 1926, and graduated in 1927.

She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 21 radar set above the bridge.Whitley, pp.

The 40-millimetre guns were replaced by two German AA guns and a pair of French M1929 Hotchkiss machineguns were added in 1939. Two Italian depth charge throwers were later installed. During World War II, the 76-millimetre gun was replaced by four AA guns. In 1943, the two ships were equipped with a German S-Gerät sonar.

She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge.Koop & Schmolke, p.

Lenton & Colledge (1968) p.90 Chelsea joined on 5 February 1942 to hunt for a submarine sighted from their convoy. Two hours later Arbutus was torpedoed. Chelsea opened fire on the surfaced submarine and made three depth charge attacks after she dived but contact was lost and she returned to pick up the survivors from Arbutus.

Lenton, p. 154 Three depth-charge chutes were fitted, each with a capacity of two depth charges. After World War II began this was increased to 33 depth charges, delivered by one or two rails and two throwers.Friedman, pp. 209, 236, 298–99 The ship was ordered on 15 July 1930 from Portsmouth Dockyard under the 1929 Naval Programme.

Lenton, p. 154 Three depth-charge chutes were fitted, each with a capacity of two depth charges. After World War II began this was increased to 33 depth charges, delivered by one or two rails and two throwers.Friedman, pp. 209, 236, 298–99 The ship was ordered on 15 July 1930 from Portsmouth Dockyard under the 1929 Programme.

Over the next four hours, both destroyers exhausted their depth charges on the target but did not sink the Japanese submarine. The destroyer then collected survivors from —heavily damaged by a kamikaze on 19 March—and delivered them to Wasp. On 31 March, obtained a sonar contact and made a depth-charge attack on a suspected Japanese submarine.

While escorting battleship for the preinvasion shelling of 27 March, Leutze made two depth charge runs which apparently sank a midget submarine. On a second voyage with and , she arrived Okinawa 3 April. This was 2 days after D-Day but in time for the first of the Japanese operations “Ten Go”, the massed kamikaze attacks.

Besides, four Type 76A dual 37 mm AA guns are also there. For anti-submarine operations, the ship has two 6-tube Type 3200 ASW rocket launchers and two depth charge (DC) racks and four DC projectors. Type 946/PJ-46 15-barrel decoy rocket launchers are also in the ship for anti-ship missile defence.

Two of her guns were replaced with L/23 AA guns, her Madsen guns were replaced with seven Oerlikon 20 mm cannons in single mounts, and a director for these guns was installed. Two depth charge tracks were added, improved range-finders were added to the guns, and sonar and radar were fitted, in addition to other minor modifications.

The spread of three torpedoes missed, and Sailfish was forced to dive deep to escape the depth charge counterattack. Eleven well-placed charges went off near the submarine, causing much minor damage. Sailfish returned to Brisbane on 1 November. Underway for her seventh patrol on 24 November, Sailfish proceeded to the area south of New Britain.

The ships were also fitted with a QF 2-pounder Mark VIII gun aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 58 For those ships assigned to convoy duty, they were armed with two depth charge launchers and two chutes to launch the 40 depth charges they carried.

The U-boat was eventually forced to surface, where she was fired on by Croome and Westcott. Westcott rammed U-581 and the whole crew were able to escape before she sank. However, Westcott ran back through the survivors in the water and dropped another depth charge, resulting in four deaths and a number of casualties.

Another depth charge attack by the escorts of Convoy UC 1 south of the Azores forced the boat to withdraw to Lorient on 8 March 1943. During her third foray, she was depth charged for 16 hours by the escorts of Convoy HX 233 west of the Bay of Biscay before arriving at St. Nazaire on 24 April 1943.

Two 3-pounder saluting guns were also carried, while the anti-submarine armament initially consisted of four depth charges. Following the outbreak of war, the ships depth charge outfit was increased to 40. Penzance was laid down at Devonport dockyard on 29 July 1929, was launched on 10 April 1930 and completed on 15 January 1931.

Lenton&Colledge; 1968 pp.80 Twenty-three of the class had further armament reductions for anti- submarine escort of trade convoys.Lenton&Colledge; 1968 pp.80&90–92 Two of the remaining 4-inch guns and three of the remaining torpedo tubes were removed to allow increased depth charge stowage and installation of Hedgehog anti- submarine mortar system.

Cassells, The Destroyers, p. 56 Nepal was long overall and long between perpendiculars, had a beam of , and a maximum draught of . Propulsion was provided by Admiralty 3-drum boilers connected to Parsons geared steam turbines, which provided to the ship's two propellers.Cassells, The Destroyers, p. 57 Nepal was capable of reaching . The ship's company consisted of 226 officers and sailors. The ship's armament consisted of six 4.7-inch QF Mark XII guns in three twin mounts, a single 4-inch QF Mark V gun, a 2-pounder 4-barrel Pom Pom, four 0.5-inch machine guns, four 20 mm Oerlikon anti-aircraft guns, four .303 Lewis machine guns, two Pentad dual torpedo launcher tube sets (with 8 torpedoes carried), two depth-charge throwers and one depth-charge chute (with 45 charges carried).

The ship was assigned to the 11th DL of the Torpedo Training School () at Toulon in 1935 as the Chacals were regarded as obsolete.Jordan & Moulin, pp. 20–21, 38–39, 213–14, 217 When the war started in September 1939, Lynx belonged to the 4th Large Destroyer Division () with her sisters and . She was assigned to the Western Command () for convoy escort duties from October to May 1940 where she guarded convoys traveling between Gibraltar and Brest as well as Casablanca, French Morocco, and Le Verdon-sur-Mer. In January 1940, the ship had a British Type 123 ASDIC installed; several months later Lynx had two depth-charge throwers reinstalled, No. 3 gun removed, and her depth charge stowage reduced to a dozen 200 kg and eight 100 kg depth charges to improve her stability.

The ship was commissioned into service in the Royal Navy as HMS Gore (K481) under the command of Lieutenant John Vivian Reeves-Brown, RN, on 14 October 1943 simultaneously with her transfer. She served on patrol and escort duty. On 26 February 1944, Gore joined the British frigates and in a depth-charge attack that sank the German submarine U-91 in the North Atlantic Ocean at position . On 29 February 1944, Gore was operating as part of the First Escort Group when she, Affleck, Gould, and the British frigate detected the German submarine U-358 in the North Atlantic north-northeast of the Azores and began a depth-charge attack which continued through the night and into 1 March 1944, the four frigates dropping a combined 104 depth charges.

Friedman, pp. 209, 236, 298–99 Late-war picture of Assiniboine. Note the cylindrical Type 271 radar above the bridge, the Hedgehog mortar shells to the right of 'A' gun and the 20 Oerlikon mount on the bridge wing. The changes made to Assiniboines armament during the war (dates can only be roughly assigned) were first the replacement of the ship's rear torpedo tube mount by a 12-pounder AA gun and the 2-pounders were exchanged for quadruple Mark I mounts for the QF 0.5-inch Vickers Mk III machine gun. Later, 'Y' gun was also removed to allow her depth charge stowage to be increased to at least 60 depth charges. 'X' gun was later removed and the 12-pounder was resited in its place to further increase her depth charge capacity.

During World War II, the navies of both the Allies and the Axis Powers built and operated hundreds of relatively small warships for the purpose of ensuring the safety of merchant convoys. These warships displaced around 1,000 tons and were typically armed with one-to-three guns of three-to-five inches in caliber, numerous smaller anti-aircraft guns and depth charge throwers.

On 13 December 1943, Sturgeon sailed for Japanese home waters. She sighted a seven-ship convoy with four escorts on 11 January 1944. Finding an overlapping target, she fired four torpedoes, and the cargo ship Erie Maru went to the bottom. The submarine was forced to go deep to avoid a depth charge attack and was unable to regain contact with the convoy.

Between 1530 and 1736, Meade and launched five intensive depth charge attacks. Meades final barrage forced to surface, and both destroyers directed "a devastating fire upon the target with all batteries." Five minutes later, Meade checked her fire and at 1751, Frazier rammed the sub, hitting her port quarter abaft the conning tower. I‑35 settled and sank, stern first, at 1754.

The air defense was changed to two 40 mm anti-aircraft automatic guns m/36 and two dual 8 mm anti-aircraft machine guns m/36. The 45 cm torpedoes was changed to 53 cm torpedoes and depth charge throwers and rack-deployed depth charges were installed. After a very short service, the ships were placed in reserve between 1943 and 1944.

The ships were fitted for minelaying, with up to 20 mines being carried, while anti-submarine armament consisted of four depth charge throwers. The hull was lengthened compared with the Göteborg class, giving a length between perpendiculars of and an overall length of with a beam of and a draught of . Displacement was standard and full load. A square stern was fitted.

28–29 The class was probably equipped with one or two depth charge racks each for anti-submarine convoy escort missions in World War I.Friedman, p. 68 Benham was equipped with four twin 4-inch mounts in 1917, but these were replaced with single mounts before she deployed overseas. By 1929 all except Parker had a /23 caliber anti-aircraft gun added.

A prolonged and deadly battle of wits ensues that tests both men and their crews. Each man grows to respect his unseen opponent. Murrell stalks the U-boat and subjects von Stolberg and his crew to multiple depth charge attacks. In the end, von Stolberg takes advantage of a moment of vulnerability in Murrell's pattern of attacks and succeeds in torpedoing the destroyer.

Two twin QF 4 inch Mk XVI naval gun anti-aircraft mounts were fitted, with a modern fire control system mounted on a new superstructure to direct their fire. Two quadruple Vickers .50 machine gun mounts provided close-in anti-aircraft armament. Modern sonar, and a relatively powerful depth-charge outfit of 30 depth charges provided the ship's anti-submarine equipment.

Laforey was briefly detached to assist a Landing Ship, Tank that had run aground at Sabaudio, but was unable to help her. She rejoined Faulknor and together they carried out depth charge attacks on a suspected submarine contact. On 26 February they were joined by the destroyers and . Laforey herself came under attack from an acoustic torpedo, which exploded in her wake.

Hedgehog depth charge launcher An anti-submarine weapon (ASW) is any one of a number of devices that are intended to act against a submarine and its crew, to destroy (sink) the vessel or reduce its capability as a weapon of war. In its simplest sense, an anti-submarine weapon is usually a projectile, missile or bomb that is optimized to destroy submarines.

The minesweeper towed G-1 back to Narragansett Bay in May 1921. Grebe made eight experimental depth charge attacks on G-1 while the boat lay off Taylor's Point on 21 June. Damaged and flooded by those explosions, the battered submarine settled to the bottom in of water. Several attempts to raise her failed and her wreck was officially abandoned.

During his breeding career, Depth Charge sired 174 Thoroughbred foals, with 149 starters and 121 winners.Bloodstock Research & Statistical Bureau Sires of American Stakes Horses p. 284 He also sired 220 Quarter Horse foals, with 80 of them earning their AQHA Race Register of Merits. Among his offspring were the Quarter Horse racehorses Johnny Dial, Super Charge, Tiny Charger, Dividend, and Miss Queenie.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20-millimetre anti-aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

Her tour of duty at Queenstown was a relatively peaceful, though rigorous, one. While she never sighted a German U-boat nor engaged in combat operations, on one voyage she escorted a convoy which lost one ship to a submarine. On another occasion, 19 March 1918, she assisted with casualties after that destroyer was damaged by an accidental depth charge explosion.

Armament consisted of three 120 mm (4.7 in) guns in single mounts on the ship's centreline, with two forward and one aft. Four 2-pounder (40 mm) pom-pom anti aircraft guns were fitted, while four depth charge throwers provided an anti-submarine armament. Gonçalo Velho was laid down on 9 October 1931, and launched on 3 August 1932.Blackman 1960, p. 253.

297 The Castle-class ships were equipped with a single QF Mk XVI gun forward, but their primary weapon was their single three-barrel Squid anti-submarine mortar. This was backed up by one depth charge rail and two throwers for 15 depth charges. The ships were fitted with two twin and a pair of single mounts for Oerlikon light AA guns.Chesneau, p.

LCAW (Low Cost Anti-submarine Weapon) is a miniature torpedo developed by Whitehead Alenia Sistemi Subacquei S.p.A (WASS). LCAW is developed to fill the gap between conventional depth charge and torpedoes, in the area where depth charges lack propulsion and guidance, while the cost of expansive torpedoes are increasingly becoming prohibitive. The program initially begun in 1987, and completed in 1992.

For anti-aircraft (AA) defence, Keith had two QF 2-pounder Mk II AA guns mounted on a platform between her funnels. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes.Friedman, p. 298 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

For anti- aircraft (AA) defence, Beagle had two QF 2-pounder Mk II AA guns mounted on a platform between her funnels. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

The guns were numbered '1' to '5' from front to rear. Their anti-aircraft armament consisted of two Canon de 75 mm modèle 1924 guns in single mounts positioned amidships. The ships carried two above- water triple sets of torpedo tubes. A pair of depth charge chutes were built into their stern; these housed a total of twenty depth charges.

In 1945, during a refit in Sydney, Shropshires armament changed again.Cassells, The Capital Ships, p. 120 The torpedo tubes and depth charge throwers were stripped from the ship, and the entire Oerlikon outfit was replaced by fifteen single 40 mm Bofors guns. By February 1946, six of the Bofors guns had been removed, with the cruiser's armament settling into its final configuration.

During Operation Husky. Blankney was able to provide air defence and shore bombardment at the Bark East Landing area with fellow destroyer, . On 10 March 1944 Blankney, , , Exmoor and the US destroyer , sank in the western Mediterranean South of Ostia, at position , in a co-ordinated depth charge attack. All 42 crew members of the submarine were rescued and became prisoners of war.

The guns were numbered '1' to '5' from front to rear. Their anti-aircraft armament consisted of two Canon de 75 mm modèle 1924 guns in single mounts positioned amidships. The ships carried two above-water triple sets of torpedo tubes. A pair of depth charge chutes were built into their stern; these housed a total of twenty depth charges.

During World War I, most American destroyers were used in anti-submarine warfare roles, and were equipped with depth charges and delivery systems, such as Y-guns and depth charge racks. O'Brien-class ships were equipped with depth charges during the war, but no specific mentions of the types of depth charges used or delivery system are recorded in secondary sources.

The guns were numbered '1' to '5' from front to rear. Their anti-aircraft armament consisted of two Canon de 75 mm modèle 1924 guns in single mounts positioned amidships. The ships carried two above-water triple sets of torpedo tubes. A pair of depth charge chutes were built into their stern; these housed a total of twenty depth charges.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20-mm anti-aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20-mm anti- aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

Taylor departed Leyte Gulf on 4 January 1945 in the screen for the cruisers in the covering force. The next day, the destroyer sighted two torpedoes running toward her formation. After giving the submarine alarm, Taylor launched a depth-charge attack on the enemy submarine—a midget. Following those attacks, she rammed the small submarine and sent it on its last dive.

An assortment of machine guns were carried for close-in defence, and depth charge throwers and rails were fitted for anti-submarine warfare. Pirie was laid down at the Broken Hill Propriety Shipyard at Whyalla, South Australia on 19 May 1941. She was launched on 3 December 1941 by Mrs. H. T. Kleeman, wife of the Whyalla superintendent of BHP.

297 The Castle-class ships were equipped with a single QF Mk XVI gun forward, but their primary weapon was their single three-barrel Squid anti-submarine mortar. This was backed up by one depth charge rail and two throwers for 15 depth charges. The ships were fitted with two twin and a pair of single mounts for Oerlikon light AA guns.Chesneau, p.

Two torpedo tubes were fitted, while two reload torpedoes could be carried.Friedman 2009, p. 124. The ship was fitted with a 2-pounder "pom-pom" anti-aircraft autocannon during the First World War, while in 1918 the torpedo tubes (and possibly one of the 4-inch guns) was removed to allow a heavy depth charge armament to be carried.Friedman 2009, pp.

The chevron, a symbol of strength and support, alludes to the prow of the ship. The three bomb bursts signify the threefold mission of a Spruance class destroyer. The lower bomb burst symbolizes a subsurface depth charge or torpedo, while the two upper represent surface and aerial firepower. The sea lion is an ancient symbol of the sea and naval powers.

The aft 127 mm (5in) gun and depth charge track can be seen. There Cdr Pappas declared his allegiance to democracy, in the background the reconstructed Olympias trireme Rank Flag flown at the foremast displacing downward the Commissioning pennant revealing that the ship is regarded as in commission Velos as museum in the Gulf of Faliro in Athens, 20 May 2006.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20 mm anti- aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

They were controllable in bearing, depth and (for Limbo) range. The three mortars had a fixed relationship to each other, giving a triangular pattern around the target. The projectile was a heavy depth charge, of around weight with of Minol filling. They were shaped to sink quickly and predictably and had a clockwork time fuze, which was set automatically between loading and firing.

For anti-aircraft purposes, the minesweepers were equipped with one QF 2-pounder Mark VIII and two single-mounted QF 20 mm Oerlikon guns.Macpherson, p. 38 The 2-pounder gun was later replaced with a twin 20 mm Oerlikon mount. As a convoy escort, Guysborough was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

The plane's attack, however, caused some damage to the boat, forcing her to return to the base. On June 4, 1942, while on patrol off the coast of Cyrenaica, she sighted two small convoys. Beilui launched three torpedoes, but failed to hit the targets. She was detected by the escorts and was subjected to intense and prolonged depth charge attacks.

While the Norwegian corvettes investigated HF/DF bearings provided by Viscount and Stockport on 23 August, Viscount conserved fuel by declining to engage in long daylight stern chases with U-boats. Viscount and Potentilla attacked HF/DF contacts more aggressively through the hours of darkness, but were satisfied by simply forcing the U-boats to submerge rather than conducting sustained depth charge attacks.

37 These guns were supplemented by six 28-round AA rocket launchers. For defense against submarines, the carrier was fitted with six depth charge throwers and carried between six and ten depth charges for them.Lengerer 2010b, p. 119 Two Type 94 high-angle fire-control directors, one on each side of the ship, were fitted to control the Type 89 guns.

Haylor caught a last glimpse of Harders periscope at 0647. At 0728, Haylor heard a string of 15 depth charge explosions in the distance; then nothing. Remaining in the area all day, Haylor surfaced after dark, at 20.10, and tried to contact Dealey, with no success. Over the next two weeks, Haylor continued his search, but no sign of Dealey or Harder materialized.

She also fired a spread "down the throat" of a Chidori-class escort but missed. As a consequence, she underwent a depth charge attack for three hours but suffered no damage. The remainder of her patrol proved fruitless, and the submarine returned to Midway Island, on 12 October, for refitting. Two weeks later, she sailed to Saipan, Mariana Islands, for further orders.

On 17 May, Scabbardfish fired a spread of torpedoes at a small freighter which was accompanied by two escorts. This proved to be a hunter-killer group, and when the torpedoes missed, they subjected the submarine to a grueling four- hour depth charge attack. The submarine sustained no serious damage and returned to Guam on 11 June to be refitted by submarine tender .

Two reloads were provided for each mount. They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 74–76 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and a S-Gerät sonar was also probably fitted. The ships were equipped with a FuMO 24 search radar above the bridge.

This patrol lasted only four days before she steamed as a convoy escort to Saipan. On 23 April 1945 Ringness again steamed for Okinawa, escorting a convoy of tank landing ships (LSTs) and medium landing ships (LSMs). On 27 April 1945, a Japanese submarine fired two torpedoes at her. Ringness replied with gunfire and a depth charge attack, with undetermined results.

In early 1930s, the main focus of Soviet shipbuilding was building small patrol ships and boats with various duties. Among them, a large part consisted of submarine hunter boats. The MO class was the first Soviet built submarine hunter ship class, with the abbreviation meaning "Small Hunter". Unlike torpedo boats, MO boats had no torpedo weapons, but instead had depth charge launchers.

Heading toward the submarine for an attack, a lookout in the foretop saw the submerged boat pass close along the starboard side. A depth charge was dropped but no immediate evidence of damage was found. Nearly three hours later, the British vessel reported a large patch of oil in approximately the same position. The next morning, Cushing also reported and confirmed Jessamines report.

Steaming at 25 knots on a night sweep, Stack sighted a submarine close aboard. She returned to the point where it had been seen and made two depth charge attacks on sound contact. came to assist and also made two attacks. The submarine, U-132, suffered damage to a diesel compressor and was forced to return to France for repairs.

On 24 January, the Japanese reached Balikpapan. On 25 January, S-38, hurriedly repaired, departed Soerabaja to patrol in Makassar Strait off Balikpapan. During the next two weeks, S-38 underwent two severe depth charge attacks. On 7 February, she penetrated close to Balikpapan to examine shipping in the harbor, activity along the coast road, and new defenses in the area.

Cutter made two more war patrols as Executive Officer of Pompano, operating in the vicinity of Okinawa and Honshū, respectively. The boat narrowly escaped destruction on 9 August 1942, when a Japanese depth charge unseated an engine exhaust valve, causing major flooding and driving her into the bottom near the Japanese coast. Fortunately, the crew managed to surface the boat and creep away.

Riilahti was armed with one 75 mm gun, one Bofors 40 mm guns and two Madsen 20 mm anti-aircraft cannons. The vessel had three mine dropping rails, and could carry about 100 mines. The ship could also hunt submarines, and was equipped with sonar, depth charge throwers and rails. The vessel was also strong enough to be ale to tow minesweeping equipment.

For anti-aircraft (AA) defence, Hyperion had two quadruple Mark I mounts for the 0.5 inch Vickers Mk III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p.

One source states that the Italian Navy escorts tried to depth charge Turbulent, whereas another claims that there was no counter-attack. Either way, the submarine escaped. Saetta took Nino Bixio in tow while Castore and Orione searched the sea for survivors. The Cadorna-class cruiser later arrived to help in the search, and a hospital ship came to receive the wounded.

HMS L23 was laid down on 26 July 1917 by Vickers at their Barrow-in-Furness shipyard, launched on 1 July 1919. The boat was then towed to Chatham Royal Dockyard and finished on 31 October 1924. She served on the China Station in the 1920s. HMS L23 survived a heavy depth charge attack by two German destroyers in February 1940.

Wilkes picked up a submarine contact at and made a shallow depth charge attack, expending four 300-pound and two 600-pound charges without success. Wilkes then abandoned her search and continued her patrol. Little more than an hour later, two ships in the convoy anchorage area were torpedoed. A U-boat hit a third ship after 26 more minutes had passed.

The air defense was changed to two 40 mm anti-aircraft automatic guns m/36 and two dual 8 mm anti-aircraft machine guns m/36. The 45 cm torpedoes was changed to 53 cm torpedoes and depth charge throwers and rack-deployed depth charges were installed. After a very short service, the ships were placed in reserve between 1943 and 1944.

They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines. A S-Gerät sonar was also probably fitted. Z37 was equipped with a FuMO 21 or FuMO 24 radar set above the bridge.

Setting out from Pearl Harbor again on 30 June, Haddock set course for the Caroline Islands on her fifth war patrol. Detecting a group of four escorted transports north of Palau on 21 July, she maneuvered into position and sank Saipan Maru (5532 tons). The depth charge attacks of the accompanying ships were ineffective. That same day Haddock came upon two unescorted tankers.

They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines. A S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge.

Two reloads were provided for each mount. She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge.

She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with either a FuMO 21 or FuMO 24/25 radar set above the bridge.Gröner, pp.

Two reloads were provided for each mount. She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge.

Crew was 136 officers and other ranks during wartime and 103 during peacetime. By 1930, Allens pom-poms had been replaced by a single 3-inch (76 mm) anti-aircraft gun. Allen was rearmed during World War II for escort operations, with two triple torpedo-tube mounts being removed to accommodate depth charge projectors and six 20 mm Oerlikon anti-aircraft guns.

A series of depth charge explosions were rewarded with the sight of a badly damaged U-boat breaking the surface. Bickerton moved in to administer the coup-de-grace, but she was beaten to it by a Swordfish from Videx which dropped two more depth charges on the hapless German vessel. A handful of survivors were taken prisoner.Macintyre (1976) pp.

Silverstein collides with , 29 May 1958. In early 1958, Silverstein resumed ASW training in the Hawaiian Islands. In May, she suffered an explosion in the depth charge impulse charge locker, and on the 28th, she collided with the submarine USS during exercises. Silverstein, the submarine , and the destroyer escort joined in the successful rescue of all 82 men in the submarine's crew.

The guns were numbered '1' to '5' from front to rear. Their anti-aircraft armament consisted of two Canon de 75 mm modèle 1924 guns in single mounts positioned amidships. The ships carried two above-water triple sets of torpedo tubes. A pair of depth charge chutes were built into their stern; these housed a total of twenty depth charges.

The depth charge racks which protruded over the stern were forced up over the deck. She then was travelling forward and struck the end of the stone jetty on her starboard side. She suffered serious damage from the 'break' to the stern. In 1948 Gabbard took part in the Autumn Cruise, which included the two aircraft carriers and , and three other smaller vessels.

On 26 April 1942, she departed Key West in company with a convoy. Just over two hours out of port, a violent explosion lifted Sturtevants stern from the water, but caused no apparent damage. Thinking herself under submarine attack, the destroyer dropped two depth charge barrages. About a minute after she dropped the second barrage of charges, a second detonation rocked the ship.

Lenton, p. 154 Three depth-charge chutes were fitted, each with a capacity of two depth charges. After World War II began this was increased to 33 depth charges, delivered by one or two rails and two throwers.Friedman, pp. 209, 236, 298–99 The ship was ordered on 15 July 1930 from Vickers-Armstrongs, Barrow-in-Furness under the 1929 Programme.

Hoe began her fourth war patrol from Fremantle 4 April, and operated in the South China Sea, the vital Japanese sea supply line. She attacked a convoy 8 May, but scored no hits. Two more attacks 17 May and 19 May resulted in several damaged freighters and severe retaliatory depth charge attacks on Hoe. She returned to Fremantle 2 June 1944.

At 1821, three torpedo wakes were sighted abaft Smiths port beam. She made a right full rudder and slipped between two of the torpedoes—one passing to port, the other to starboard. Henley took a torpedo on the port side and, six minutes later, broke in half, disappearing from sight at 1832. Smith made a depth charge attack that proved futile.

Drum sailed on 2 November for her eighth war patrol, coordinated with the landings at Cape Torokina. Patrolling between the Carolines and New Ireland, she sank the submarine tender Hie Maru (11,621 tons) on 17 November, and on 22 November attacked a convoy of four freighters. The convoy's escorts delivered three depth charge attacks. Drum was heavily damaged and ordered to Pearl Harbor.

Megatron is a heroic Predacon. Megatron's ship, the Darksyde, was battling the Axalon when it was pulled through an unexpected temporal and dimensional rift and crash- landed on prehistoric Earth. He and his crew disembarked to find Depth Charge outside. Megatron appears to be based on the deluxe-sized Beast Wars 10th- anniversary Megatron toy with Optimus Primal's color scheme.

The ships carried eight above-water torpedo tubes in two power-operated mounts amidships. Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Sufficient depth charges were carried for either two or four patterns of sixteen charges each.Whitley, p.

As part of "Operation Teardrop", she took part in the destruction of the last desperate U-boat group to sortie, with escort carriers , , and many sister ships. was torpedoed and sunk suddenly on 24 April, and Hubbard joined in hunting the attacker. After many depth charge attacks, four by Hubbard alone, surfaced. The destroyer escorts' guns quickly sank the submarine.

Canadian propaganda poster depicting the boarding of U-94 on 28 August 1942. U-157 was sunk on 13 June 1942 by the U.S. Coast Guard. The U-boat was surface cruising just southwest of Key West, in position , when sighted by . The German submarine submerged and attempted to flee but Thetis gained sonar contact and began a depth charge attack.

Fred, who is by Jet Radar, has a notable pedigree. The stallion is double-bred Jet Deck-on the top through the Depth Charge/Go Man Go-bred Rare Jet. On the bottom, he is through Easy Jet and mixed with a Lady Bugs Moon daughter. Fred's dam is Sleek Glass, who is a granddam of both Secretariat and Johnny Dial.

For anti- aircraft purposes, the minesweepers were equipped with one QF 2-pounder Mark VIII and two single-mounted QF 20 mm Oerlikon guns.Macpherson (1997), p. 38 The 2-pounder gun was later replaced with a twin 20 mm Oerlikon mount. As a convoy escort, Bayfield was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

On 8 September 1941 Croome was escorting Convoy OG 75, en route from Liverpool to Gibraltar. While conducting a forward sweep Croome spotted the on the surface at 8,500 yards. Baracca dived as Croome turned towards her at full speed. After two depth-charge attacks, Baracca surfaced astern of Croome, which opened fire with all guns as she went about.

On 17 February 1918, lookouts sighted another submarine at astern. Seneca fired one shot, but owing to the darkness of the night, was unable to determine the results. On 4 March, one of the ships in Senecas convoy was torpedoed and sunk, but the submarine was not sighted. On the 22nd, new and improved depth charge releasing gear was installed on the cutter.

The primary armaments of the ship are two twin 57mm 70-cal Type 76 DP guns and two twin 25mm 60cal Type 61 guns. Besides these, she carries a variety of weapons to perform ASW missions. The ASW weapons are four RBU-1200 (Type 81) (5-barrel) ASW rockets, two BMB-2 ASW mortars, and two depth charge rails with 20 depth charges.

Macpherson, p. 19 For anti-aircraft purposes, the minesweeper was equipped with one QF 2-pounder Mark VIII and two single-mounted QF 20 mm Oerlikon guns. The 2-pounder gun was later replaced with a powered twin 20 mm Oerlikon mount. As a convoy escort, Minas was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

297 The Castle-class ships were equipped with a single QF Mk XVI gun forward, but their primary weapon was their single three-barrel Squid anti-submarine mortar. This was backed up by one depth charge rail and two throwers for 15 depth charges. The ships were fitted with two twin and a pair of single mounts for Oerlikon light AA guns.Chesneau, p.

For anti-aircraft purposes, the minesweepers were equipped with one QF 2-pounder Mark VIII and two single-mounted QF 20 mm Oerlikon guns.Macpherson (1997), p. 38 The 2-pounder gun was later replaced with a twin 20 mm Oerlikon mount. As a convoy escort, Caraquet was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

Hichens, p.201 The flotilla's second success was the night of 19/20 December 1941, again in the North Sea off the Dutch coast, when two boats engaged two R boats and one E boat. They passed twice at high speed before losing contact, but twice during the night they located them and eventually carried out depth charge attacks.Hichens, pp.

For anti-aircraft purposes, the minesweepers were equipped with one QF 2-pounder Mark VIII and two single- mounted QF 20 mm Oerlikon guns.Macpherson (1997), p. 38 The 2-pounder gun was later replaced with a twin 20 mm Oerlikon mount. As a convoy escort, Canso was deployed with 40 depth charges launched from two depth charge throwers and four chutes.

In April 1945, Vanquisher was part of the escort for Convoy ONA 265. On 10 April, she and the corvette cooperated in a depth-charge attack that sank the German submarine U-878 with all hands in the Bay of Biscay west of Saint-Nazaire, France, at . After the surrender of Germany in early May 1945, the Royal Navy withdrew Vanquisher from service.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20-mm anti-aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20 mm anti-aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

In a separate incident, the frigate HMS Plymouth endured the sudden attack of the Daggers from Rio Grande, which struck her with four 1,000-pound bombs. The warship sustained severe damage, and five crewmen were injured. Although all the bombs were duds, the attack caused the explosion of at least one depth charge on her flight deck.Chun, Clayton K S. (2001).

297 The Castle-class ships were equipped with a single QF Mk XVI gun forward, but their primary weapon was their single three-barrel Squid anti-submarine mortar. This was backed up by one depth charge rail and two throwers for 15 depth charges. The ships were fitted with two twin and a pair of single mounts for Oerlikon light AA guns.Chesneau, p.

The bow had increased flare for better control in heavy seas. The revised Flowers of the RCN received an additional two depth charge throwers fitted amidships and more depth charges. They also came with heavier secondary armament with 20-mm anti-aircraft guns carried on the extended bridge wings. All this led to an increase in displacement, draught and length.

Cassells, The Destroyers, p. 51 Napier was long overall and long between perpendiculars, had a beam of , and a maximum draught of . Propulsion was provided by Admiralty 3-drum boilers connected to Parsons geared steam turbines, which provided 40,000 shaft horsepower to the ship's two propellers.Cassells, The Destroyers, p. 52 Napier was capable of reaching . The ship's company consisted of 226 officers and sailors. The ship's armament consisted of six 4.7-inch QF Mark XII guns in three twin mounts, a single 4-inch QF Mark V gun, a 2-pounder 4-barrel Pom Pom, four 0.5-inch machine guns, four 20 mm Oerlikon anti-aircraft guns, four .303 Lewis machine guns, two Pentad dual torpedo launcher tube sets (with 8 torpedoes carried), two depth-charge throwers and one depth-charge chute (with 45 charges carried).

Similar to the earlier American Mousetrap, 375mm (14.8") Swedish Bofors, and 250mm (9.8") and 300mm (11.8") Soviet systems, all of which use multiple rockets, Weapon Alpha was developed toward the end of World War II, in response to the German Type XXI U-boat. Begun in a crash program in 1944–5 and put in service before undergoing operational evaluation, it emerged in 1949 as a 227-kg (500 lb) 127mm (5") rocket with a 113-kg (250 lb) warhead that sank at 12 m/s (40 ft/s) (compared to a depth charge, which sank at 2.7–5 m/s (8.9–16.5 ft/s)Fitzsimons, Bernard, ed. "Depth Charge", in Encyclopedia of Twentieth Century Weapons and Warfare (London: Phoebus Publishing Co, 1978), Volume 7, p. 730.), an influence or time pistol, and a range of 360–730 m (400–800 yd).

The primary shock wave is the initial shock wave of the depth charge, and will cause damage to personnel and equipment inside the submarine if detonated close enough. The secondary shock wave is a result of the cyclical expansion and contraction of the gas bubble and will bend the submarine back and forth and cause catastrophic hull breach, in a way that can be likened to bending a plastic ruler rapidly back and forth until it snaps. Up to sixteen cycles of the secondary shock wave have been recorded in tests. The effect of the secondary shock wave can be reinforced if another depth charge detonates on the other side of the hull in close time proximity to the first detonation, which is why depth charges are normally launched in pairs with different pre- set detonation depths.

It is protected against any future attempts to salvage it. Oceanographer and National Geographic Explorer-in-Residence Robert Ballard explored and mapped the wreck in the summer of 2014 with remotely operated vehicles, where they noticed that the submarine's bow had been blown off and found rested on the seafloor 100 feet away from the main hull. They determined that the bow of the submarine was destroyed, apparently by a depth charge which landed on the forward deck, exploded, and caused an internal detonation of the submarine's own torpedoes which broke off the bow. If so this would be one of the few successful submarine kills caused by direct contact from a depth charge, as typical attacks relied upon depth charges exploding a short distance away which inflicted repeated hydraulic shocks that would eventually crack a submarine's pressure hull.

Aft, torpedomen checked the depth charge racks, thinking that a "K-gun" might have been fired accidentally, but found no charges missing. The ship's sonar operator then reported hearing two additional, but rather weak, explosions, along with hissing and gurgling noises. A strong smell of diesel oil hung in the air in the vicinity of the final attack. Postwar accounting would confirm that Bangust sunk Japanese submarine .

On 14 October, while patrolling south of the Palau Islands, the submarine torpedoed and sank the 6,781-ton cargo ship, Shunko Maru (). Following a depth charge attack by a Japanese destroyer, the submarine returned to Pearl Harbor on 26 November. Skipjack’s sixth, seventh, and eighth war patrols were unproductive. But, during her ninth, conducted in the Caroline Islands and Mariana Islands areas, she sank two enemy vessels.

The machine generated 24,000 horsepower, giving a speed of 35 knots. Nordenskjölds main armament was made up of three 12 cm guns, placed on the front deck, between the funnels and on the aft deck. In the stern there was an anti-aircraft bridge with two 40 mm anti-aircraft automatic guns. Furthermore, there were torpedo tubes, depth charge thrower and rack-deployed depth charges.

Later in the war, single Oerlikons replaced the .50-calibre machineguns and, still later, twin Oerlikon mounts replaced four of the singles. The M-class ships completed with only one above-water quadruple mount for torpedoes, but the aft mount was later replaced and the 4-inch AA gun removed. The ships were equipped with two depth charge throwers, two racks and 42 depth charges.

Terne is a Norwegian anti-submarine weapon system, which uses rocket-thrown depth charges. It was developed by the Norwegian Defence Research Establishment (FFI) in cooperation with the U.S. Navy in the late 1940s-early 1960s. The Terne development project consisted of three phases: Terne I : Development of a rocketborn depth charge. Terne II: Development and construction of a landbased ASW for naval defense.

Orchis was then assigned to patrol the English Channel, and sank the on 15 August 1944.Rohwer & Hummelchen (1992), p. 291 U-741 torpedoed LST-404 of convoy FTM-69 while Orchis was escorting nearby convoy FTC-68. Orchis gained and held sonar contact on U-741 and flooded the forward part of the U-boat with two Hedgehog attacks and two depth charge attacks.

The ship's main armament consisted of four QF 4.7 inch Mk IX guns in single turrets. This was supplemented by a quadruple 2-pounder pom-pom, and six 20 mm Oerlikon anti-aircraft guns. Four depth-charge throwers were fitted, with a payload of 70 charges carried, and two quadruple 21-inch torpedo tube sets were fitted, although a maximum of eight torpedoes were carried.

She was designated as a target for depth charge experiments under the cognizance of the Bureau of Ordnance on 9 June. In 1920, G-1 was redesignated SS-20 even though that hull classification symbol and number had already been given to (ex-Carp). F-1 had sunk in a collision with F-3 in 1917, so there was no overlap in time of service.

Frequent depth charge attacks pursued Plunger in January 1944 as she patrolled off the Japanese main islands. The risk was profitable, however, as she sank Toyo Maru No. 5 and Toyo Maru No. 8 on 2 February and Kimishima Maru on 23 February. Returning to Pearl Harbor 8 March, Plunger departed again 8 May to patrol the Bonin Islands. In July, she patrolled in and around Truk.

Pollack received a depth charge attack and was lightly damaged. The timing of this attack was important in reducing the number of Japanese troops garrisoned on Tarawa, which was attacked by American forces several months later in the Battle of Tarawa. Pollack returned to Pearl Harbor on 25 June. Sailing on 20 July, Pollack spent her eighth war patrol off the east coast of Kyūshū, Japan.

Nothing was seen, with German forces staying close to home. On 28 February 1917, Milne was one of five destroyers escorting shipping from the Netherlands to Britain when she sighted a periscope and was missed by a torpedo. Milne retaliated with a depth charge, but there was no apparent effect. On 30 April 1917, Milne joined the 6th Destroyer Flotilla, part of the Dover Patrol.

To be effective depth charges had to be set to the correct depth. To ensure this, a pattern of charges set to different depths would be laid atop the submarine's suspected position. The effective use of depth charges required the combined resources and skills of many individuals during an attack. Sonar, helm, depth charge crews and the movement of other ships had to be carefully coordinated.

Duncan made no ASDIC contact, but dropped a single depth charge at the estimated diving position before making another radar contact at . As Duncan closed, the U-boat dived at a range of . Duncan gained a good ASDIC contact and dropped a pattern of ten depth charges over a visible wake. Two more depth charges were dropped when a weak ASDIC contact was regained at 0045.

Gannon (1998) p.186 Selvistan, Gharinda, and Bonde were hit by a salvo of four torpedoes from U-266 within the space of a few minutes about 1950. Selvistan and Bonde sank within two minutes. Tay rescued survivors from the three ships while Offa made depth charge attacks damaging U-266, which was sunk by aircraft on 15 May while attempting to reach base for repairs.

Two months later, she hosted Doumerge as he reviewed the fleet off Le Havre on 3 July.Jordan & Moulin, pp. 20–21, 209–10, 213, 215–18 Two years later, the ship participated in the naval review at Algiers on 10 May 1930 commemorating the centenary of the first French landing in Algeria on 13 June 1830. The four depth charge throwers were removed in 1932.

She saw action bombarding Attu on 26 April, and as antiscreen for during the landings of 11 May. The following day she teamed with for a 10-hour depth charge attack on a submarine which attempted to torpedo the battleship. was forced to the surface and badly damaged by Edwards guns before diving, only to be sunk by . Edwards continued to ply Aleutian waters on antisubmarine patrol.

On 15 May 1917, TB 81 was directed by a seaplane towards a submarine which the aircraft had spotted and attacked in the English Channel. TB 81 detected a possible submarine contact on her hydrophone, and waited until a submarine (possibly or ) surfaced. TB 81 gave chase, and the submarine dived. The torpedo boat dropped a depth-charge and brought up a patch of oil.

For her sixth war patrol Hammerhead operated in the Gulf of Siam. She arrived 6 May and that night encountered a small tanker and two escorts. After missing with two torpedoes at extreme range the submarine found the mark in a second attack, sinking the tanker Kinrei Maru. Hammerhead attacked other ships of the convoy without success and after a depth charge attack decided to break off.

Stille, pp. 37–38 For defense against submarines, the carrier was fitted with six depth charge throwers and carried between six and ten depth charges for them. A Type 3 sonar and a Type 93 hydrophone were fitted to detect any submarines. Two Type 94 high-angle fire-control directors, one on each side of the ship, were fitted to control the Type 89 guns.

Transferred to the United Kingdom under Lend-Lease on 25 July 1944, the ship served in the Royal Navy as HMS Papua (K588) on patrol and escort duty. On 4 February 1945, she shared credit with the British frigates , , and for sinking the German submarine in a depth- charge attack in the North Channel off Malin Head, Ireland, at . She was decommissioned later in 1945.

After a sustained depth charge attack, the U-boat surfaced and carried out a running gun battle before her deck gun jammed. Heidel ordered the boat to be abandoned, then apparently went down with it. The remainder of the crew was rescued by the escorts. The British awarded official credit for sinking U-55 to the sloop , the destroyer , French destroyers Valmy and Guépard, and the Sunderland.

Halibut was detected and the escort drove her off and held her at bay with fifteen depth charge attacks as the freighter fled. Resurfacing, a lookout noticed the smoke of a distant convoy. The submarine closed as the daylight faded, coming close enough to submerge for periscope observation on the morning of 1 November. The convoy consisted of seven freighters and three -type torpedo boats as escorts.

Rhind then steamed north to patrol the waters off Bermuda. In February 1942, she shifted further north and through March escorted Icelandic convoys. In April she shepherded a convoy to the Panama Canal Zone and on the 23rd, while en route back to New York, conducted her first depth charge attack on a German submarine. The U-boat had shelled a Norwegian merchantman off New Jersey.

The damaged tanker was beached in Pasaleng Bay while Yūnagi stood by. Spadefish fired four more torpedoes at the beached tanker until a depth charge attack by Yūnagi chased away the submarine. Yūnagi was relieved of responsibility for Hakko Maru No. 2 on 25 August and was sunk an hour later by Picuda. Hakko Maru No. 2 remained beached until destroyed by heavy surf on 18 September.

On 25 November 1944, during her third patrol, Cavalla encountered two Japanese destroyers and made a surface attack which destroyed the Shimotsuki at . The companion destroyer began depth charge attacks, while Cavalla evaded on the surface. Later in the same patrol, on 5 January 1945 Cavalla made a night surface attack on an enemy convoy and sank two converted net tenders (Kanko Maru, Shunsen Maru) at .

The contact disappeared from radar, indicating a submerging submarine. MacDonough subsequently gained sonar contact on the submarine and, with an F6F Hellcat fighter from Fighter Squadron 28 (VF-28) aboard the light aircraft carrier providing spotting support, made two depth-charge attacks.Naval History and Heritage Command "Japanese Submarine Casualties in World War Two (I and RO Boats)" Accessed September 24, 2020 The destroyer also joined the attack.

Main armament for the corvette consisted of one 4-inch high-angle gun, supplemented by three 20 mm Oerlikon cannons (one of which was later replaced by a 40 mm Bofors gun), plus machine guns. Depth charge chutes and throwers were also fitted. The ship's company consisted of 85 personnel. Mildura was laid down by Morts Dock & Engineering Co in Sydney on 23 September 1940.

Onslow was completed with a close-in anti-aircraft armament of one quadruple 2-pounder "pom-pom" mount together with four single Oerlikon 20 mm cannon, with two on the bridge wings and two further aft abreast the searchlight platform. After April 1943, the single Oerlikon mounts abreast the searchlights were replaced by twin mounts. Four depth charge throwers were fitted, with 60 depth charges carried.

However, before using their creation in actual operations against submarines trailing her convoy, the two officers wanted at least one more test with a larger propellant charge. Accordingly, on August 17, 1918, they commenced another experiment—which proved to be a disaster. Williamson fired the gun, but a defective fuse caused the depth charge to explode prematurely, killing him instantly. The blast knocked Capt.

On 12 July Ostrich and the destroyer were escorting a north-bound convoy when the German submarine attacked the convoy, torpedoing and sinking the Norwegian merchant ship Balzac. Although Thrasher retaliated with a depth charge, the submarine was undamaged. In October 1917, Ostrich was listed as being under the Captain-in- Charge Lowestoft. She remained based at Lowestoft until the end of the war.

At about 15:42, the destroyer sighted her. She went deep. For the remainder of the day and well into the night, the two adversaries maneuvered for position: S-35 evading depth charges and attempting to gain a favorable firing position; the destroyer keeping the submarine on evasive tactics and attempting to pinpoint her location and deliver a decisive depth charge. Success went to neither side.

While attempting another test with an increased propellant charge the following day, a defective fuse exploded the depth charge prematurely, killing Williamson and three other sailors. White, four other officers, and twenty-two enlisted men were also wounded in the blast.Gleaves, pp. 172–173. Four days later on 21 August at 08:30, Orizaba, traveling with Siboney, spotted a submarine in the act of submerging.

After screening the carriers in attacks on Okinawa and Formosa, Gridley joined the American forces for the invasion of the Philippines. While protecting the large ships off Luzon 28 October 1944 she and destroyer detected and sank the with a series of devastating depth charge attacks. In the succeeding days, Gridley fought off Japanese kamikazes and returned to Ulithi with damaged carriers and on 2 November.

The cargoman probably sank; but Threadfin could not verify that result visually because the escorts drove her deep with a persistent, though ineffective, depth charge attack. Two days later, the submarine encountered a Japanese . However, the enemy's course changes kept Threadfin from gaining an advantageous attack setup, and the Japanese "pig-boat" disappeared in the distance. Threadfin next happened upon two freighters escorted by three patrol craft.

They were equipped with two depth charge chutes for 18 depth charges.Lacroix & Wells, pp. 579–581 It was originally supposed to equip them with nine 155mm guns in three triple turrets like those used in their successor, triple torpedo tubes and no 8cm guns, but the triple 155mm turrets were too large for the ships. Therefore the main battery was changed to four twin 152mm turrets.

U.S. Navy submarine chasers were designed specifically to destroy German submarines in World War I, and Japanese and German submarines in World War II. The small SC-1-class submarine chasers of the design used in World War I carried the hull designator SC (for Submarine Chaser).Gardiner, pp. 132-133 Their main weapon was the depth charge. They also carried machine guns and anti-aircraft guns.

A depth charge explodes astern during a practice anti-submarine run during the ship's shakedown tests. On 2 July 1944, the ship's shakedown cruise and post-inspection was completed. PC-1264 was then ordered to a three and a half-days' exercise at the Fleet Sound School in Key West. However, as far as the Submarine Chaser Training Center was concerned, PC-1264 was ready.

Hours passed as the destroyer remained in the attack area. At midnight, astern of the convoy, silently moving up to regain station U-444 was surfaced and going at top speed after the convoy. After the U-boat dived, Harvester raced over dive position and forced her to surface by depth charge attacks. Circling at speed Harvester searched and spotted the U-boat 500 yards ahead.

Two reloads were provided for each mount. They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 74–76 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and a S-Gerät sonar was also probably fitted. The ships were equipped with a FuMO 24/25 radar set above the bridge.

258 In 1937–38, Okikaze was one of the ships that had her hull strengthened, funnel caps added and her fuel capacity reduced to . Early in the war, Nos. 2 and 3 guns and both sets of aft torpedo tubes were removed in exchange for four depth charge throwers, 36 depth charges, and 10 license-built Type 96 light AA guns. These changes reduced their speed to .

On 21 September, U-517 was nearly rammed and sunk by while approaching SQ-38. On 29 September, the submarine was bombed by another aircraft from 113 Squadron, with one unexploded depth charge lodged in the U-517s foredeck. The submarine withdrew from the area on 2 October. These losses contributed to the Canadian government's decision to close the Gulf and St. Lawrence River to overseas shipping.

Two years later, all of her torpedo tubes were removed as were all of her guns except No. 1. They were replaced by 10 license-built Type 96 light AA guns, four depth charge throwers, and 36 depth charges. During the summer of 1944, her light AA armament was augmented to between thirteen and twenty 25 mm guns and five Type 93 anti-aircraft machineguns.

Cushing rejoined her convoy the next day. Continuing her convoy escort and patrol duty, Cushing on 23 April 1918 dropped fifteen depth charges on German submarine , damaging her severely; sank U-104 later that same day. After 11 June 1918, Cushing operated from Brest, France, escorting eleven troop convoys through the submarine zones into French ports, making two depth charge attacks without success in the process.

Two reloads were provided for each mount. They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 74–76 mines. 'GHG' (Gruppenhorchgerät) passive hydrophones were fitted to detect submarines and an S-Gerät sonar was also probably fitted. The ships were equipped with a FuMO 24/25 radar set above the bridge.

She bombarded Tarawa on 20 November supporting landings there for several days. She was lightly damaged by a friendly depth charge when a nearby destroyer erroneously detected a Japanese submarine. In December 1943 she moved to the Marshall Islands escorting the new Essex-class carrier . While Lexington came under air attack, none of the Japanese planes came within range of Portland and she did not open fire.

Whitley 1999, p. 199. During the 1940s, the ships' bridges were modified, and tripod masts replaced the original foremast. Anti- aircraft armament was strengthened by the addition of seven Browning machine guns, while a depth charge thrower and rails was fitted to provide an anti- submarine capability. Following the entry of Peru into World War II in 1944, the two cruisers were used for coastal patrols.

U-517 then evaded a depth charge pattern. A few hours later, she was attacked by a Digby aircraft of No. 10 Squadron RCAF; but the depth charges detonated prematurely, causing more damage to the aircraft than to the U-boat. The submarine subsequently sank the Canadian corvette about off Cap-Chat on 11 September. U-517 docked at Lorient in occupied France on 19 October 1942.

A depth charge explodes astern during a practice anti-submarine run during the USS PC-1264's shakedown tests. The USS PC 552 was commissioned on 29 July 1942, Lt. Donald McVickar, USNR commanding. By 12 August, the ship was underway for the first time in New York Harbor. The first few months were spent shaking down the ship, calibrating the engines, steering communication, guns, etc.

Anti-submarine mortars are artillery pieces deployed on ships for the purpose of sinking submarines by a direct hit with a small explosive charge. They are often larger versions of the mortar used by infantry and fire a projectile in relatively the same manner. They were created during World War II as a development of the depth charge and work on the same principle.

227 On 24 June, while on patrol in the English Channel off Land's End, investigated a Liberator bomber dropping depth charges on a target. Haida and the British destroyer began their own depth charge attacks after being informed that a submarine had been spotted. After several attacks, the submarine surfaced and attempted to run. Haida and Eskimo began to fire with all their guns and sank .

She gave chase on the surface but was illuminated by the moon. As one of the destroyers turned to attack, Harder submerged, turned her stern to the charging destroyer, and fired three torpedoes at range of . Two struck Minazuki and exploded; the destroyer sank within five minutes. After attacking the second escort without success, Harder was held down by a depth charge attack while the convoy escaped.

At 07:28 she heard 15 rapid depth charges explode in the distance astern. She continued evasive action that morning, then returned to the general area of the attack shortly after noon. She swept the area at periscope depth but found only a ring of marker buoys covering a radius of one-half mile. The vigorous depth charge attack had sunk the Harder with all hands.

The ship's armament consists of two Oto Melara 76mm/62 caliber Compact naval guns, two Otobreda 40mm L/70 twin naval guns, two Mk. 32 triple torpedo launchers, six M2HB Browning .50 caliber machine guns, and two Mk.9 depth charge racks. The vessel is also equipped with a mount for a Simbad MANPADS firing station for MBDA Mistral and/or LIGNex1 Chiron VSHORAD missile system.

Launchers are compatible with other, more modern MANPADS. Two rocket twelve-barreled depth charge launchers RBU-6000 are intended for anti-submarine warfare. Their range is 350 to 5,500 m, with a maximum target depth of 400 m. The frigates are also armed with artillery, consisting of a universal automatic AK-726 cannon caliber 2x76.2 mm and two AK-230 caliber 30 mm cannons.

The following month, Fähndrich and the crew of U-15 scored their second double kill when they sank the Italian auxiliary cruiser () and the French destroyer Fourche (). While about east of Otranto on 23 June, U-15 torpedoed and sank Cittá di Messina. The escorting destroyer Fourche began a depth charge attack on U-15 and assumed success when an oil slick appeared on the surface.

Three minutes later, she delivered a modified "intermediate depth charge attack." Large amounts of air were seen to emerge at the scene of the attack in the center of which appeared the bow of a submarine, which then rolled over and disappeared, apparently out of control. At 16:14, Wilkes delivered a deep attack, including three 600-pound charges at the scene of the air blows.

Naka was forced to return to Japan for repairs and was out of the war for almost a year. Unaware she had hit her target, Seawolf then underwent 7 hours of depth charge attacks. On 1 April, she attacked two cruisers. A violent explosion was heard, but no flames were seen. Seawolf ended her patrol on 7 April at Fremantle and received the Navy Unit Commendation.

192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

Damage to this ship could not be ascertained as the submarine was immediately attacked by enemy bombs and depth charges. On 17 March, a freighter was tracked and a precise torpedo spread damaged it considerably. Two days later Kingfish sighted, tracked, and sank a troop transport as enemy troops scrambled down her sides. On 23 March, Kingfish was subjected to a severe depth charge attack.

The submarine made no attacks during this patrol, although the boat underwent a bombing and depth charge attack. Kingfish departed her patrol area, arriving Majuro, Marshall Islands, 9 April for refit. The submarine's eighth war patrol was made in the Bonins. Since this patrol was also unfruitful due to the lack of worthwhile targets, Kingfish received orders to return to Midway, arriving there 19 June.

The W44 nuclear depth charge entered service in 1961, but was never used beyond one or two tests before the Limited Nuclear Test Ban Treaty banning underwater nuclear tests went into effect. A total of 575 weapons were produced. The W44 weighed with a diameter of and length of . Following payload separation, the unguided W44 sank quickly to a predetermined depth where the 10-kiloton warhead detonated.

Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Sufficient depth charges were carried for either two or four patterns of sixteen charges each.Whitley, p. 215 Mine rails could be fitted on the rear deck that had a maximum capacity of sixty mines.

The armament consisted of two twin 76 mm AK726 gun mountings and two twin 30mm AA guns, 4 SSN-2 anti ship missile launchers were fitted in some ships, depth charge and mine racks were fitted at the stern. The Libyan vessels had a redesigned layout with the SS-N-2 missiles forward of the bridge. The ships had contemporary Soviet radar and sonar.

Her first encounter with U-boats came on 13 July when she was apparently attacked by two submarines. They launched a total of three torpedoes at Benham, but she and her convoy evaded them. The destroyer then drove them away with a depth charge attack. On 30 July, while she was on her way to Queenstown, the destroyer spied the wake of another torpedo some from her.

They were quickly equipped with strengthened bows for ramming, and depth charges and hydrophones for identifying submarine targets. The first submarine casualty to a destroyer was the German , rammed by on 29 October 1914. While U-19 was only damaged, the next month successfully sank . The first depth-charge sinking was on 4 December 1916, when U-Boats Destroyed, Paul Kemp (1997), was sunk by HMS Llewellyn.

A set of depth-charge rails was added on the stern and the ship was fitted with hydrophones at the bow.Friedman, pp. 66, 74 monitor is firing in the foreground, 6 June 1944 Frobisher was assigned to the 4th Cruiser Squadron of the Eastern Fleet after the refit was completed and began escorting convoys and the fleet's capital ships in the Indian Ocean.Morris, p. 169; Rohwer, p.

192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

The machine generated 24,000 horsepower, giving a speed of 35 knots. Ehrenskölds main armament was made up of three 12 cm guns, placed on the front deck, between the funnels and on the aft deck. In the stern there was an anti- aircraft bridge with two 40 mm anti-aircraft automatic guns. Furthermore, there were torpedo tubes, depth charge thrower and rack-deployed depth charges.

The ships also had two quadruple torpedo launchers for Type 93 (Long Lance) torpedoes on the centerline and had a reload system with eight spare torpedoes. They were equipped for anti-submarine warfare with two depth charge chutes for 18 depth charges and could also carry three mines. The Agano-class ships were also fitted with a pair of Aichi E13A floatplanes and a catapult.Lacroix & Wells, pp.

The escorts fired wildly and laid depth charge patterns astern of Rasher. In a second surfaced approach to Rasher launched a spread of six bow torpedoes. Three torpedoes hit and sank the 17,000 ton transport Teia Maru, killing 2,665 Japanese soldiers, and a fourth torpedo was heard exploding at a timed range of 3900 yards. Rasher swung hard left to launch four stern torpedoes at 2214.

68 Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Enough depth charges were carried for either two or four patterns of 16 charges each.Whitley, p. 299 Mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

A German U-boat attacked the Allied ships two days out of Oran. Bangor joined the other escorts in a coordinated depth charge attack, but without success. Bangor made one more round trip transatlantic voyage without incident before undergoing repairs at Bayonne, New Jersey. She resumed her escort duties on 22 April 1945 and joined an Oran-bound convoy out of New York City.

68 Four depth charge throwers were mounted on the sides of the rear deckhouse and they were supplemented by six racks for individual depth charges on the sides of the stern. Enough depth charges were carried for either two or four patterns of 16 charges each.Whitley, p. 215 Mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

When World War II broke out, Shockley became involved in radar research at Bell Labs in Manhattan (New York City). In May 1942, he took leave from Bell Labs to become a research director at Columbia University's Anti-Submarine Warfare Operations Group.Broken Genius p. 65–67 This involved devising methods for countering the tactics of submarines with improved convoying techniques, optimizing depth charge patterns, and so on.

192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.

The submarine was completed at the Kure Dock Yard on 31 July 1934. She was originally designated I-68. On 23 November 1941, I-68 and the rest of Submarine Squadron 3 were stationed near lingam to perform reconnaissance duties in preparation for the impending attack on Pearl Harbor. Still on station near Hawaii on December 13, I-68 was subjected to 21 separate depth charge attacks.

Hichens lost the first boat under his command during the night action 2/3 October 1942. Engaging four trawlers MGB 78 went in for a depth charge attack and was lost to enemy fire.Hichens, pp.294–295 Another boat, MGB 76, was lost during the night of 5/6 October 1942, when the flotilla was ambushed by two German torpedo boats and a number of E boats.

While steaming in search of the enemy 18 March 100 miles east of Halifax, Lowe made sonar contact and attacked with two patterns of hedgehogs. The depth charge attacks with those of other ships of the group brought an oil slick and large amounts of debris to the surface. The submarine was still on the bottom the following day when Lowe reestablished sound contact.

She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p. 141 The ship was fitted with a Type 119 ASDIC set to detect submarines through sound waves beamed into the water that would reflect off the submarine.

Two torpedoes also hit Sakito Maru around 17:56 and she caught fire. Asashimo detected Trout and dropped 19 depth charges. Oil and debris came to the surface and the destroyer dropped a final depth charge on that spot, sinking the American submarine with the loss of all hands at the position . At 04:00 on 1 March 1944, the burning Sakito Maru also sank.

In 1939, HMS Veteran was in dockyard hands for a major refit. As with most elderly destroyers allocated to escort duties, the after bank of torpedo tubes was removed and replaced with a single QF 12 pounder 12 cwt naval gun. They also landed 'Y' gun to receive additional space for depth charge gear and stowage. She was recommissioned into service in November 1939 commanded by Lieut.

At 14:05 on the 7th, the destroyer escort laid two "hedgehog" projectile patterns and one standard depth charge pattern on a target later evaluated as a school of fish. Undaunted, the Bogue group pressed on with the hunt. Their vigilance and training ultimately paid off. At 00:43 on 19 August, night-flying aircraft from Bogue attacked a submarine running on the surface.

Rotherham, Raider and Rocket later had the Oerlikons and searchlight amidships replaced by four single QF 40 mm Bofors. The searchlight was later reinstated at the cost of depth charge stowage. Raider only had an additional pair of twin Mark V Oerlikon mounts added on the after shelter deck. Radar Type 290 was replaced by Type 291, and later by Type 293 in some ships.

Sculpins fourth war patrol, from 29 May – 17 June, was in the South China Sea. On 8 June, she was unsuccessful in an attack on a cargo ship, again due to torpedo malfunction. A vigorous depth charge attack kept Sculpin down while the cargo ship escaped. On 13 June, near Balabac Strait, she torpedoed a cargo ship which returned fire with her deck gun and commenced to limp away.

She completed her initial run, at times she lost contact but then she picked it up again and made an additional run. "Rancher" dropped 11 depth charges per pattern. "Rancher" would drop a pattern and the Frank Knox would cross her wake and drop a pattern. Torpedo man Hudnall was on depth charge central which was on the starboard side of the ship one deck below the bridge.

Mk-101 Lulu NDB (Nuclear Depth Bomb). The Mark 101 Lulu was an airdropped nuclear depth charge developed by the U. S. Navy and the Atomic Energy Commission during the 1950s. It carried a W34 nuclear warhead, with an explosive yield of about 11 kilotons. It was deployed by the U.S. Navy for the purposes of antisubmarine warfare, in at least five different models, from 1958 through 1971.

Ramirez de Arellano was awarded a Bronze Star Medal with Combat V and a Letter of Commendation. Among the Hispanic submarine commanders were Rear Admiral Rafael Celestino Benítez and Captain C. Kenneth Ruiz. Rear Admiral Rafael Celestino Benítez, USN, was a lieutenant commander who saw action aboard submarines and on various occasions weathered depth charge attacks. For his actions, he was awarded the Silver and Bronze Star Medals.

Halpern, pp. 175–76. One of them hit its mark and blew the stern off of Weymouth, killing four sailors in the process. The other British cruisers involved in the attack took the damaged Weymouth under tow and departed. United States Navy submarine chasers were involved in the depth charge attacks on U-29 and U-31 and erroneously claimed that they had sunk both of the submarines.

Deloraine then observed 'large bubbles of oil and air'. Sister ships Katoomba and Lithgow arrived in the area; the two ships continuing to patrol and depth-charge the area while Deloraine reloaded. They were successful, and the four ships were jointly credited with the kill of I-124—the first enemy submarine to be sunk in Australian waters, going down with 80 lives.Stevens, A Critical Vulnerability, pp. 183–4.

The Pauldings were commissioned in 1910–1912 and were active throughout World War I, primarily as convoy escorts in the Atlantic. They were equipped with one or two depth charge tracks for this mission. All served in the United States Navy; twelve were transferred to the United States Coast Guard 1924–30 for the Rum Patrol; and all were scrapped 1934–35 to comply with the London Naval Treaty.

After observing the success of her attack, Ambra moved away. While Hereward was rescuing the survivors, Stuart, who was missed by the third torpedo, detected Ambra with ASDIC and commenced a series of depth charge attacks against the submarine. Hereward soon joined in, and attacks lasted for several hours until approximately 6:30. The submarine suffered damage to a variety of her equipment, including both gyroscopic and magnetic compasses.

For the reasons expressed above, the depth charge was generally replaced as an anti-submarine weapon. Initially, this was by ahead-throwing weapons such as the British- developed Hedgehog and later Squid. These weapons threw a pattern of warheads ahead of the attacking vessel to bracket a submerged contact. The Hedgehog was contact fuzed, while the squid fired a pattern of three large (200 kg) depth charges with clockwork detonators.

Following this ordeal, Albacore received orders to locate and attack the cruiser , which had been hit and damaged by . Albacore found Agano on 12 November and tried to attack, but Japanese destroyers held the submarine down with a four-hour depth charge barrage. On 25 November, Albacore sank Japanese army transport Kenzan Maru. On her return to Brisbane on 5 December, Lieutenant Commander James W. Blanchard replaced Hagberg in command.

Depth charge stowage could also be increased from 40 in the Type I to 110. For the 1940 building programme, torpedoes were deemed necessary. The next 27 ships were completed to a revised design, the Type III group, and were intended specifically for Mediterranean work. They sacrificed 'Y' gun for a pair of 21-inch torpedo tubes amidships, the searchlight being displaced to the aft shelter deck as a result.

The German submarine lined up for a shot at the British merchant steamer SS Welshman and almost immediately Officer of the Deck Lieutenant William O. Henry ordered the destroyer to make circles and engage. At 4:00 Fanning dropped three depth charges, scoring a hit which shook up the U-boat well. Then USS Nicholson joined in the fighting, commanded by Frank Berrien, and dropped another depth charge herself.

For the next week, S-37 remained in the area. Depth charge and aerial attacks were frequent, each one aggravating the condition of worn parts and equipment and resulting in mechanical and electrical failures and in leaks through disintegrating manhole and hatch gaskets. On 6 March, she headed for western Australia. Her major leak, through the engine room hatch, had been slowed to one gallon every 20 minutes.

When the U-boat disappeared, PC-565 altered course to the right to pass ahead of the swirl. At 12:43Q she dropped one depth charge set at about ahead of the position of the sinking. She then moved in to pick up the only survivor, and several large air slugs were observed. The patrol craft continued to search the area and at 13:25Q several oil slicks were sighted.

But U-966 slowed to an estimated six to eight knots, and then within of the Spanish coast she slowed to two knots before running aground. 42 of her 50 crew survived. They scuttled her in the Bay of Biscay off O Porto de Bares, Galicia, Spain, after several depth charge attacks badly damaged her, then took to their dinghies and were interned in Spain. The wreck is at .

Oil and debris came to the surface and the destroyer dropped a final depth charge on that spot. The submarine was using Mk. XVIII electric torpedoes, and it was also possible that one of those had made a circular run and sunk the boat, as happened with . Asashimo participated in the Battle of the Philippine Sea. During the Battle of Leyte Gulf, she rescued survivors of the cruiser on 23 October.

Stephen Potter screened the carriers as they launched strikes on 21 and 22 April supporting the assault on Hollandia, New Guinea. At the end of the month, they returned again to bomb Truk. Stephen Potter, and were steaming south of Truk on 30 April when MacDonough made a radar contact on a submarine, which soon disappeared as the enemy submerged. Sonar contact was made, and MacDonough made two depth charge attacks.

On 29 February 1944, Rock contacted a large enemy convoy en route to Truk. Detected by destroyer Asashimo while making a night surface approach on the convoy, she fired a spread of four torpedoes from her stern tubes at the closing enemy destroyer without scoring. Then illuminated by the destroyer's searchlight, and under fire from the surface ship's guns, she dived. For 4 hours she underwent depth charge attacks, but survived.

The original gun armament of three 3-inch AA guns and six 20 mm AA guns was replaced with one 5-inch DP gun and six 40 mm AA guns. The Charles Lawrence class retained the original three torpedo tubes, and carried two depth charge racks and up to eight K-guns. Typically, the converted DEs carried four LCVPs (Landing Craft Vehicle and Personnel) in a stacked davit configuration.

Adelaide was completed with these modifications, and received a major refit in the 1930s, with coal-fired boilers being removed along with a funnel, reducing the ship's speed, while one 6-inch was removed, with 4-inch anti-aircraft guns added. She was subject to further armament revisions during the Second World War, with more 6- and 4-inch guns removed to accommodate depth charge throwers, and radar being fitted.

The weather impeded her efforts to close the convoy, but also offered protection when a rain squall covered Balao while she fired six torpedoes. The submarine counted three explosions and then went deep to wait out the inevitable depth charge attack by the escorts. When Balao surfaced the next morning, the convoy had disappeared. Certain that the freighter had been sunk, Balao resumed her patrol of the shipping lanes.

Conversion to an armed yacht involved removing most of the luxurious finery and installing naval hardware. This involved the installation of a QF gun, one machine gun, sonar and twenty depth charges and two depth charge throwers. The ship had a displacement of and a complement of five officers and 35 ratings. Renamed Husky and commissioned at Halifax on 23 July, the yacht began local patrols off Halifax the same day.

Adding depth charge racks on the deck, ASDIC below, and a or gun in the bows equipped the trawler for anti-submarine duties. The Royal Navy ordered many naval trawlers to Admiralty specifications. Shipyards such as Smiths Dock Company that were used to building fishing trawlers could easily switch to constructing naval versions. As a bonus, the Admiralty could sell these trawlers to commercial fishing interests when the wars ended.

A Hedgehog anti-submarine mortar was mounted between the 3 inch gun and the ship's bridge, while depth charge projectors and rails were mounted on the ships' fantail. Later ships were fitted with a third Bofors gun and additional Oerlikons, while ships were later modified to mount three twin Bofors mounts and four Oerlikons. Some ships (including PCE-867) were armed with two 3-inch guns and three Oerlikons.

6 U-570 quickly resurfaced and around 10 of the crew emerged. The Hudson fired on them with machine guns, but ceased when the U-boat crew displayed a white sheet. The captured crewmembers later recounted to British naval intelligence interrogators what had happened—the depth charge explosions had almost rolled the boat over, knocked out all electrical power, smashed instruments, caused water leaks, and contaminated the air on the boat.

Both cruisers promptly made for the enemy, opening fire on it at extreme range. At 10:54 Dublin saw the track of a torpedo passing ahead of her. At 11:12 a submarine was sighted and at 11:15 another one was spotted, which fired two torpedoes at her. At 11:20 she sighted a third submarine, which she engaged with her guns and on which she dropped a depth-charge.

Kempthorne, Goodson and Keats were then deployed as a close escort for Vindex. They remained with Vindex for several days and on 6 May the was detected by HMS Bickerton. Fairey Swordfish of 825 Naval Air Squadron were scrambled from Vindex whilst Bligh, Bickerton and Aylmer carried out depth charge attacks. These attacks brought U-765 to the surface where she was engaged by surface gunfire from the attacking ships.

On 2 January 1945, she stood out of Oran in the screen of Convoy GUS-63. Soon after the convoy passed through the Strait of Gibraltar, one of its ships, the merchant ship SS Henry Miller, suffered a torpedo hit from the German submarine U-870. Brunswick conducted a depth-charge attack, but U-870 escaped. Brunswick escorted the damaged Henry Miller into Gibraltar and then rejoined the convoy screen.

West Bridge immediately began listing to starboard, and Hawkins ordered the crew to abandon ship. He and two crewmen remained behind until he felt sure that everyone else had departed. By the time the three left the stricken ship, water was up to the gunwales and lapping at the well deck. Immediately after the attack, Noma sped off to depth charge the submarine while sending an SOS for West Bridge.

They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but the total was increased to 15 guns by August 1943. 36 depth charges were stowed aboard initially, but this later increased by August 1943 to 60 depth charges with a Type 97 trench mortar and six depth charge throwers. They received Type 22 and Type 13 radars and Type 93 sonar in 1943–44.

On 30 October, Yorktown was preparing to fuel three destroyers when other escorts made sound contacts. The convoy subsequently made 10 emergency turns while the destroyers and dropped depth charges, with assisted in developing the contact. Anderson later made two more depth charge attacks, noticing "considerable oil with slick spreading but no wreckage". The short-of-war period was becoming more like the real thing as each day went on.

They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but the total was increased to 15 guns by August 1943. 36 depth charges were stowed aboard initially, but this later increased by August 1943 to 60 depth charges with a Type 97 trench mortar and six depth charge throwers. They received Type 22 and Type 13 radars and Type 93 sonar in 1943–44.

Hayanami sank a minute later. Following the inevitable depth charge attack, Harder transited the Sibutu Passage after dark and steamed to the northeast coast of Borneo. There on the night of 8 June she picked up six Australian Coastwatchers, and early next day she headed once more for Sibutu Passage. That evening Harder sighted two enemy destroyers patrolling the narrowest part of the passage, just a few miles from Tawi-Tawi.

Originally laid down as E-class submarine E58 on 18 May 1916, she and sister ship incorporated enough changes that they were renamed as the first pair of boats of a newly designated L class. L2 was launched 6 July 1917, and commissioned on 18 December 1917. L2 survived an accidental attack by three American destroyers on 24 February 1918. The first heavy depth charge jammed the hydroplanes hard up.

All torpedo tubes were removed, while a relatively small depth charge outfit of twenty charges was fitted, in accordance with the ship's employment on East Coast convoy duties, where the principal danger was enemy aircraft. A QF 12-pounder 12 cwt naval gun was later fitted forward, with the two 2-pounder guns moved to the ship's beam, replacing the beam 3 inch guns.Hague 1988, p. 58.Friedman 2009, pp.

4, sighted the conning tower of I-123 as she submerged east of Savo Island. Using a magnetic anomaly detector to track I-123, Gamble conducted several depth charge attacks against her between 08:44 and 11:47. After the last attack, Gamble passed through a large oil slick and her crew observed a large air bubble breaking the surface. Gamble later recovered broken deck planking from the water.

Wilkes made a submarine contact at and made a depth charge attack with negative results. The destroyer then screened the damaged ship as she was being towed into Casablanca. Two days later Wilkes rejoined the convoy as it steamed homeward and, on 30 November 1942, arrived at Norfolk. She spent the month of December conducting short escort and patrol missions in waters in New York and Casco Bay, Maine.

The P-3, powered by four turboprop engines, is derived from the 1950s era Lockheed Electra airliner. In addition to their ASW and SAR capabilities, most P-3Cs have been modified to carry Harpoon and Maverick missiles for attacking surface ships. American P-3s were formerly armed with the Lulu nuclear depth charge for ASW, but those were removed from the arsenal and scrapped decades ago. "P-3C." history.navy.mil.

They had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines. A S-Gerät sonar was also probably fitted. The ship was equipped with a FuMO 24/25 radar set above the bridge as well as a FuMB 34 radar detector.

By this time there were 13 destroyers idle in New York Harbor, yet none were employed to deal with the immediate threat, and over the following nights U-123 was presented with a succession of easy targets, most of them burning navigation lamps. At times, U-123 was operating in coastal waters that were so shallow that they barely allowed it to conceal itself, let alone evade a depth charge attack.

Her anti-aircraft armament consisted of four SK C/30 guns in two twin mounts abreast the rear funnel and six C/30 guns in single mounts. The ship carried eight above-water torpedo tubes in two power-operated mounts. Two reloads were provided for each mount. She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

Her anti- aircraft armament consisted of four SK C/30 guns in two twin mounts abreast the rear funnel and six C/30 guns in single mounts. The ship carried eight above-water torpedo tubes in two power-operated mounts. Two reloads were provided for each mount. She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

Her anti-aircraft armament consisted of four SK C/30 guns in two twin mounts abreast the rear funnel and six C/30 guns in single mounts. The ship carried eight above-water torpedo tubes in two power-operated mounts. Two reloads were provided for each mount. She had four depth charge launchers and mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines.

Amity is set as a 1950s-era American fishing village hit by a tidal wave and opened with Tidal Wave in 2000. It was previously named 'Amity Cove', as still named on themed signage. The area was expanded in 2006 with Stealth, set at 'Amity Speedway' racetrack. It later took on attractions from the former 'Neptune's Beach' family area, Depth Charge, Wet Wet Wet and Amity Beach outdoor water park.

They were insufficiently engineered for running at full speeds, and tended to crack the cylinder rings and blocks. Submerged propulsion was provided by a 336-cell battery driving two Laurence Scott electric motors. These provided an endurance of 48 hours at or only one hour at the maximum submerged speed of . The battery proved vulnerable to shock damage from depth charge attacks, and this contributed to the loss of in 1942.

Greenling's last war patrol, her 12th, was carried out in the Ryukyu Islands. Departing Pearl Harbor 26 December she found no targets until 24 January 1945, when she intercepted a nine-ship convoy. While making her approach, Greenling was attacked by escorts, and after a four-hour depth charge attack managed to make her escape. The submarine suffered minor damage and steamed to Saipan 27 January 1945 for repairs.

The primary ASW weapon for combating submarines were SET-40 torpedoes. The boats have four torpedo tubes installed on the deck in the aft part of the boats, two on the port side and two on starboard side. Behind the torpedo tubes on the aft deck, in the port and starboard sides, are each one Abrollgestell depth charge launcher. Twelve depth charges, six for each launcher can be carried.

They were equipped with two depth charge chutes for 18 depth charges and could also carry three mines.Lacroix & Wells, pp. 579–581 The propulsion machinery was protected by a waterline armor belt thick with transverse bulkheads fore and aft of the propulsion machinery and a middle deck of the same thickness. The ships' magazines were enclosed in armored boxes with sides, 20-millimeter tops and 20- or 25-millimeter ends.

The title 70 Minutes of Madness was a nod to Coldcut's earlier Eric B & Rakim remix, and included sounds from Depth Charge, DJ Food, Plastikman, Mantronix, Harold Budd and the Doctor Who theme. In 1994, Matt Black's close friend Mixmaster Morris introduced Matt to Openmind – a DJ & design collective in Camberwell – at the Telepathic Fish chill-out club they were running. Openmind included Kevin Foakes a.k.a. Strictly Kev of DJ Food.

One depth charge rack was removed and two Hedgehog ASW mortar mounts added. The K-guns were retained. Nine additional (for a total of 35) ships were converted to radar picket destroyers (DDR) in the early 1950s; these typically received only one 3-inch/50 caliber twin mount to save weight for radar equipment, as did the wartime radar pickets. Nine ships were converted to escort destroyers (DDE), emphasizing ASW.

Following Corrys depth charge attack mid-day on 17 March, when the submarine surfaced Corry sank her with gunfire, and picked up her 47 survivors. Two days later, on 19 March 1944, Corry rescued eight survivors of , which was sunk at , southwest of the Cape Verde Islands, by aircraft from . Among the U-1059 survivors was the commanding officer. Corry arrived at Boston on 30 March for overhaul followed by training.

Aradu also has six STWS-13 torpedo tubes in two triple mounts located amidships on either side of the ship and one depth charge rack. Aradu is equipped with Plessey AWS 5 air/surface search radar, Racal Decca 1226 navigation radar, Signaal STIR and WM 25 fire control radar and Atlas Elektronik hull-mounted sonar. The ship originally mounted PHS 32 sonar, but this was later replaced.Couhat, p. 358.

They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but the total was increased to 15 guns by August 1943. 36 depth charges were stowed aboard initially, but this later increased by August 1943 to 60 depth charges with a Type 97 trench mortar and six depth charge throwers. They received Type 22 and Type 13 radars and Type 93 sonar in 1943–44.

Lenton, p. 154 Three depth-charge chutes were fitted, each with a capacity of two depth charges. After World War II began this was increased to 33 depth charges, delivered by one or two rails and two throwers.Friedman, pp. 209, 236, 298–99 Crescent was ordered on 30 January 1930 as part of the 1929 Naval Programme and laid down on 1 December 1930 at Vickers-Armstrongs, Barrow-in-Furness.

361–62 Erich Koellner was scuttled shortly afterwards by detonating a depth charge in her auxiliary machinery spaces.Whitley, p. 102 In the aftermath of the battle, 155 of the ship's crew, including Schulze-Hinrichs, were taken prisoner by Norwegian forces. The captured crewmen were first incarcerated in Vardøhus Fortress in Finnmark and later transferred to Skorpa prisoner of war camp in Troms until released after the end of the Norwegian Campaign.

In Royal Canadian Navy (RCN) service, Moose had a displacement of , was long with a beam o f and a draught of . They vessel had a maximum speed of and a complement of 5 officers and 35 ratings. The ship was armed with one QF 12-pounder 12 cwt naval gun forward and depth charge racks. As of 2019, the yacht Uhtingo, which was refitted in 2001, is measured at and .

156–159 After the war began in September 1939, the depth-charge stowage aboard the Le Fantasques increased to 48. In addition the mine rails were replaced by a pair of rails for depth charges. Each rail could accommodate 3 depth charges and 15 more were stored in the magazine. In 1942 the four undamaged ships still under Vichy French control were given Alpha-2 sonar systems in cases.

Significant upgrades were made to the weapons systems of the two ships that survived Matapan, similar to those made to the Maestrales. One torpedo tube mounting was replaced by two /54 guns; cannon, a 120 mm star-shell gunCampbell, pp. 335–338 and depth charge throwers were also installed. Before the end of the war, one ship, Oriani had German Seetakt radar and an additional 20 mm cannon.

The target disappeared from radar at a range of , but Ellet then picked up a sonar contact at a range of . Between 20:12 and 20:38 Ellet conducted a series of depth charge attacks. She lost sonar contact at 20:59, and at dawn on 4 September 1943 a large oil slick and debris were sighted on the surface at . The submarines Wadsworth and Ellet sank remain unidentified.

Sailfish once more fired three stern tubes, sinking Iburi Maru; in response, the subchaser, aircraft, and three additional escorts, pinned her down in a gruelling depth charge attack lasting 10 hours and 98 charges but causing only slight damage. After shaking loose pursuit, she set course for Midway on 26 June, arriving there on 3 July.At the time, Moore was not given credit for the sinkings, and was transferred. Blair, pp.

Sailfish heard Totai Maru () break up and sink as the destroyers made a vigorous but inaccurate depth charge attack. When Sailfish caught up with the other freighter she was dead in the water, but covered by a screen of five destroyers. Rather than face suicidal odds, the submarine quietly left the area. On the night of 20 December, she intercepted an enemy hospital ship, which she left unmolested.

When the destroyer reached the estimated location of the U-boat, she dropped a depth charge and then a buoy to mark the spot. The warship followed that maneuver with a systematic, circular search out to a radius of . Having found nothing by 04:00 the following morning, she gave up and shaped a course for Queenstown. The ensuing six months brought no new encounters with U-boats.

Wadsworth made her fourth depth charge attack on a U-boat on 29 July. At about 17:25, she dropped several charges in what appeared to be the wake of a submarine proceeding submerged. The conjecture that a U-boat was damaged was supported by the appearance of a large amount of heavy oil on the surface following the attack. Just before 23:00, the warship attacked another supposed submarine wake.

The minesweeper was armed with a single quick-firing (QF) 20 cwt gun mounted forward. The ships were also fitted with a QF 2-pounder Mark VIII aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 46 Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

The minesweeper was armed with a single quick-firing (QF) 20 cwt gun mounted forward. The ship was also fitted with a QF 2-pounder Mark VIII aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 46 Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

Scott was however frustrated by the Admiralty's exhaustive development process and instead of having a basic howitzer depth charge combination in late 1914, the weapon did not become available until 1916.Scott (1919), pp. 287-288 Much of Scott's time was employed cutting through red tape and getting the Grand Fleet fitted with director-firing. However, in May 1915 Fisher resigned and Scott once more found himself with little influence.

Thetis picked up trying to escape the "dragnet" and destroyed her in a single depth charge attack. That patrol craft recovered two pairs of leather submariner's pants and a tube of lubricant marked "made in Düsseldorf." There were no survivors. Triton took part in further attacks, along with the other ships of the hunter-killer group based on Key West; but, by that point, the enemy submersible had already been killed.

The minesweeper was armed with a single quick-firing (QF) 20 cwt gun mounted forward. The ship was also fitted with a QF 2-pounder Mark VIII aft and were eventually fitted with single-mounted QF 20 mm Oerlikon guns on the bridge wings.Macpherson (1997), p. 46 Those ships assigned to convoy duty were armed with two depth charge launchers and four chutes to deploy their 40 depth charges.

80 Nicholson had the only functional radar, though the merchant ship Toward could provide support with its High- frequency direction finding (HF/DF) set. Lea carried a British ASV aircraft radar with fixed antennae, but the coaxial cable to the antennae was repeatedly shorted by salt water spray.Hagerman (February 1976) p. 80 Edison had no depth charge throwers, and was limited to a linear pattern rolled off the stern.

As Manhasset patrolled near the British merchant ship Dolius, torpedoed and abandoned earlier in the day but still afloat, she made sound contact with a submarine late in the afternoon. She made six vigorous depth charge attacks and sighted first a periscope wake followed by an oil slick. However, she sighted no wreckage and broke off attack to guard the torpedoed ship after more than 2 hours of searching.

Archerfish submerged and fired six torpedoes. Enright deliberately set the torpedoes to run shallow () in hopes of capsizing the target by holing it higher up on its hull. He also wanted to increase the chances of a hit in case the torpedoes ran deeper than set. Even as Archerfish descended to to avoid a depth charge attack, Enright and the crew saw that the carrier was already listing to starboard.

In 1931 she was used as a training ship for stokers. In 1935, the ship took part in the suppression of a Communist Rebellion. Brazil became involved in the Second World War in 1942, and while Maranhão was obsolete, she was used for convoy escort and patrol duties. During the war, she was fitted with sonar and depth charge rails, and her armament was supplemented by three Oerlikon 20 mm cannon.

U-256s return fire had hit the starboard elevator and rear turret of the aircraft, but it returned safely to base. U-flak 2 was caught on the surface by the American destroyer USS Borie on 31 October. The U-boat escaped, but with minor depth charge damage. On 16 November the inbound boat encountered a Halifax Mk.II aircraft of No. 502 Squadron RAF in the Bay of Biscay.

Aircraft depth charge tactics depended on the aircraft using its speed to rapidly appear from over the horizon and surprising the submarine on the surface (where it spent most of its time) during the day or night (using radar to detect the target and a Leigh light to illuminate just prior to the attack), then quickly attacking once it had been located, as the submarine would normally crash dive to escape attack. As the Battle of the Atlantic wore on, British and Commonwealth forces became particularly adept at depth charge tactics, and formed some of the first destroyer hunter-killer groups to actively seek out and destroy German U-boats. Surface ships usually used ASDIC (sonar) to detect submerged submarines. However, to deliver its depth charges a ship had to pass over the contact to drop them over the stern; sonar contact would be lost just before attack, rendering the hunter blind at the crucial moment.

The ship had a main gun armament of four 4.7 inch (120 mm) QF Mk. IX guns on single mountings, capable of elevating to an angle of 55 degrees rather than the 40 degree of previous War Emergency destroyers, giving improved anti-aircraft capability. The close-in anti-aircraft armament was one Hazemayer stabilised twin mount for the Bofors 40 mm gun and four twin Oerlikon 20 mm cannons. Two quadruple mounts for 21 inch (533 mm) torpedoes were fitted, while the ship had an depth charge outfit of four depth charge mortars and two racks, with a total of 70 charges carried. Swift was fitted with a Type 272 surface warning radar and a high-frequency direction finding (HF/DF) aerial on the ship's tripod foremast, with a Type 291 air warning radar on a pole mast aft and Type 285 fire control radar integrated with the ship's high-angle gun director.

In April 1939, the bridge wings were enlarged to accommodate the Hotchkiss machine guns on Le Triomphant, and . After the war began, 200 kg depth-charge stowage increased to 48 and a pair of rails were installed on the stern for depth charges. Each rail could accommodate 3 depth charges and 15 more were stored in the magazine. In early 1940 twin-gun 37 mm mounts replaced the single-gun mounts. Under Free French control as of 3 July, Le Triomphant was refitted in late 1940 during which she had her aft superfiring 138.6 mm gun replaced by a British 4-inch (102 mm) Mk V AA gun and a Type 128 ASDIC system that had been taken from a seized French destroyer was installed. The 35 kg depth charges and their rails were removed and the ship was fitted with four Modèle 1918 depth-charge throwers abreast the aft superstructure for depth charges.

As she came to periscope depth within attack range of the cruiser, she was sighted by one of the escorts approximately away. She started going deep but had only reached a depth of when the first depth charge exploded, breaking numerous light bulbs but causing no serious damage. Sturgeon began silent running and evaded the escorts. On the evening of 21 December, she sighted a darkened ship believed to be a large cargo carrier.

She submerged and fired four torpedoes at a large ship, with two explosions following. The submarine was then subjected to a two and one-half-hour depth charge attack by two destroyers which caused no damage. She next sighted an enemy transport and four destroyers off Balikpapan on 26 January. Sturgeon fired a spread from her forward tubes which resulted in a large explosion on the transport, and her screws stopped turning.

After the war, Japanese records revealed had beached herself, and was later salvaged. Three nights later, Sculpin detected a Japanese task force (bound for Makassar City, Celebes) made up of destroyers, cruisers, and an aircraft carrier (a startling sight, as it remained for the duration). She fired on a cruiser, missed and was detected and forced to dive. She escaped four hours later after a heavy depth charge attack by six destroyers.

The waters of the Bismarck Archipelago were the theater of her fifth patrol, from 8 September-26 October. After reconnaissance off Thilenius and Montagu harbors of New Ireland, Sculpin commenced her search for Japanese shipping. On 28 September, she scored two hits on a cargo ship, but was forced to dive as a Japanese destroyer raced to the scene. Sculpin was under depth charge attack for three hours, during which she sustained minor damage.

On 5 May, as an element of an escort group, she cleared Saipan with Convoy SOK-1, bound for Okinawa. Two incidents highlighted the otherwise uneventful passage. On 9 May, Bright picked up a sonar contact and made two unsuccessful depth charge attacks. The second attack, though, was soon followed by a torpedo wake approaching her on the port quarter. Bright maneuvered to avoid the "fish," and it passed 20 feet from her bow.

The main difference between the Hellwin and the Hellraiser is the Hellwin's use of MIDI to control the amp. The Hellwin is also a three-channel amp, as opposed to the Hellraiser's two-channel design. Schecter also introduced a line of speaker cabinets, one featuring a 200W sub-woofer called the "Depth Charge", that would increase the cabinet's bass response. These amps were debuted, along with the USA Production Line, at Winter NAMM 2013.

E5 was lost on 7 March 1916 while rescuing the survivors of the trawler Resono, just north of Juist in the North Sea. There were different theories about the reason for the loss of E5. One theory was that she struck a mine, possibly after straying into a German minefield upon being sighted by the German light cruiser . Another theory attributed her loss to depth charge attack by torpedo boats escorting the battlecruiser .

The U-boats crash-dived and a BV 138 nearby was driven off; the ship failed to located the U-boats with Asdic and one of the U-boats made an abortive attack on the ship, which returned to the convoy at The weather deterioration continued into the evening and as the destroyer returned to its station after dropping back to refuel, a depth- charge attack was made on a "suspicious object".

When UC-39 dived, Thrasher responded with a depth charge which badly damaged the submarine, which was forced to the surface. Thrasher fired on the surfaced submarine until it was realised that UC-39s crew was surrendering. Thrasher rescued 17 Germans together with two British sailors who had been held prisoner aboard UC-39, with seven Germans killed. UC-39 sank while attempts were being made to tow the submarine to port.

51 Anti- aircraft (AA) defense for the Freccia-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti- submarine work, they were fitted with a pair of depth charge throwers. The Freccias could carry 54 mines.

51 Anti-aircraft (AA) defense for the Freccia- class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The Freccias could carry 54 mines.

Their anti- aircraft suite consisted of one twin-gun stabilised Mk IV "Hazemeyer" mount for Bofors guns and two single 2-pounder (40 mm) AA guns amidships, and single mounts for a Oerlikon AA gun on the bridge wings. The ships were fitted with one quadruple mount for 21-inch (533 mm) torpedo tubes.Chesneau, p. 43 The ships were equipped with a pair of depth charge rails and two throwers for 35 depth charges.

53 Anti-aircraft (AA) defense for the Folgore-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The Folgores could carry 52 mines.

53 Anti-aircraft (AA) defense for the Folgore-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti- submarine work, they were fitted with a pair of depth charge throwers. The Folgores could carry 52 mines.

53 Anti-aircraft (AA) defense for the Folgore-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti-submarine work, they were fitted with a pair of depth charge throwers. The Folgores could carry 52 mines.

51 Anti-aircraft (AA) defense for the Freccia-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti- submarine work, they were fitted with a pair of depth charge throwers. The Freccias could carry 54 mines.

The ship's 1st LT saved her by securing bow to stern with anchor chain, and closing the watertight door beside his room. Only one sailor (a cook) was struck unconscious. Commander Richard Varley of the Eaton was later court- martialed and found negligent. In another accident, the NOTS RUR-4 Weapon Alpha rocket-boosted depth charge projector misfired, with one warhead falling back onto the 01 deck and killing a seaman below.

For anti-aircraft (AA) defence, Havant had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were originally fitted, but this was increased to 3 sets of rails and eight throwers while fitting-out. The ship's load of depth charges was increased from 20 to 110 as well.

In April 1939, the bridge wings were enlarged to accommodate the Hotchkiss machine guns on Le Malin. After the war began in September, 200 kg depth-charge stowage increased to 48 and a pair of rails were installed on the stern for depth charges. Each rail could accommodate 3 depth charges and 15 more were stored in the magazine. In early 1940 twin-gun 37 mm mounts replaced the single-gun mounts.

The escort suddenly dropped a depth charge and turned straight towards Upholder. Wanklyn dived the submarine to 45 feet and climbed to periscope depth when he could hear the destroyer passing off to the west. He engaged a grey cargo vessel laden with wooden packing cases. Two explosions were heard and distress signals identified her as Laura C. The destroyer dropped 19 depth charges, which shattered light bulbs and came close to damaging the submarine.

Their anti-aircraft suite consisted of one twin-gun stabilised Mk IV "Hazemeyer" mount for Bofors guns and two single 2-pounder (40 mm) AA guns amidships, and single mounts for a Oerlikon AA gun on the bridge wings. The ships were fitted with one quadruple mount for 21-inch (533 mm) torpedo tubes.Chesneau, p. 43 The ships were equipped with a pair of depth charge rails and two throwers for 35 depth charges.

All six hit the mark. Two of the four stern torpedoes hit a merchantman and the other two ripped into a light cruiser, while the two from the bow tubes smashed into another freighter. At least two of the ships went to the bottom, light cruiser Tatsuta and cargoman Kokuyo Maru, carrying over 1,000 enemy troops. For her success, Sand Lance underwent a 16-hour, 100-depth charge pounding from the accompanying destroyers.

She claimed two small inter-island freighters on 24 and 28 July. One reference credits Narwhal with 3 sinkings on 24 July.HyperWar USN Chronology 1942 However, it is likely that the gunboat mentioned was too small to be considered in the official tally, and the other two sinkings are the ones that took place around this date. On 1 August, Narwhal included Meiwa Maru to her credit despite aircraft bomb and depth charge retaliation.

The cutter made sonar contact with a "doubtful" object and dropped one 600 pound depth charge at U-626 sinking the ship and killing the crew of 47. The cutter continued on without incident, without even knowing that it sank U-626. This was the last U-boat of 1942 to be sunk by an American agency, and it was not known until after the war that Ingham had sunk U-626.

241 and 'Y' gun was removed to compensate for the additional depth charges added. Around December 1941, the ship was converted to an escort destroyer with the replacement of her 'A' gun by a Hedgehog anti-submarine spigot mortar and additional depth charge stowage replaced the 12-pounder high-angle gun. The 2-pounder mounts were replaced by Oerlikon autocannon and two additional Oerlikon guns were also added in the forward superstructure.Whitley, p.

On 3 July 1928, Lynx participated in a naval review by Gaston Doumergue, President of France, off Le Havre. The four depth charge throwers were removed in 1932. The next year, the ship was present when the fleet was reviewed by the new President of France, Albert Lebrun, in Cherbourg on 20 July 1933. About two years later, the 75-millimeter guns were replaced by four twin mounts for anti-aircraft machineguns.

Guitarro detected a convoy along the coastline 10 August, maneuvered from beachside, and launched four torpedoes. Tanker Shinei Maru exploded and burned furiously as Guitarro dived to avoid depth charges. The submarine suffered considerable outside damage but no serious injury, and she departed for the vicinity of Cape Calavite with Raton. While submerged the morning of 21 August Guitarro heard a distant depth charge attack, and soon sighted the smoke of a convoy.

89 The ship mounted four 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft defence Greyhound had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

Hawkbill departed for her fifth and last war patrol 12 July. Returning to the coast of Malaya, she attacked a convoy 18 July. Her first torpedoes missed, and an hour later a depth charge attack of unusual accuracy and intensity began from the destroyer Kamikaze. Hawkbill was blown partially out of the water by a perfectly placed pattern and damaged considerably; but by hugging the bottom with all machinery secured, she eluded the attacking destroyer.

89 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft defence Grafton had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

Preparing a bomb shot A bomb shot, depth charge, or drop shot (Canada), is a mixed drink that is made by mixing two drinks. A drink in a small glass (typically a shot glass) is dropped into a larger glass holding a different drink. The resulting cocktail is typically consumed as quickly as possible ("chugged"). Recently, the term has become more loosely defined as simply a shot that is made by mixing two drinks.

With America's entry into the war, Herbert operated as a convoy escort along the American coast from Key West north to Halifax and Iceland. Guiding virtually defenseless merchant ships through coastal and Caribbean waters patrolled by U-boats, Herbert carried out frequent depth charge attacks on marauding submarines. From April through June 1943 she visited Gibraltar and North Africa, as the build-up for the invasion of Sicily intensified. A hunter-killer patrol followed.

Z2 Georg Thiele had four depth charge launchers mounted on the sides of her rear deckhouse, which was supplemented by six racks for individual depth charges on the sides of the stern, with either 32 or 64 charges carried.Whitley, p. 215 Mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines.

Halibut began her fifth war patrol 10 June and made for the waters around Truk. She made her first attack 23 June. No hits were scored and the submarine was forced to wait out a severe depth charge attack. Halibut detected, tracked, and attacked a convoy bound for Truk from Kisarazu, Japan, putting a single torpedo (out of a spread of six) into the side of IJN troop transport Aikoku Maru (10,437 tons).

Friedman 2009, p. 241. Further changes included the addition of two Oerlikon 20 mm cannon,Friedman 2009, p. 243. the removal of two 4.7 inch guns ("A"- and "Y"-mount), replacement of the ships rangefinder and director with radar, fitting of the Hedgehog anti-submarine mortar and a heavier depth charge outfit. The ship's Hedgehog mount and remaining torpedo tubes were removed when the ship was fitted with two Squid launchers in May 1943.

They used the G7a torpedo which had a warhead and three speed/range settings: at ; at and at .Campbell, p. 263 For anti-submarine work the ships were fitted with four depth charge launchers and six individual cradles for 32 depth charges. They probably would have been equipped with the same electronics suite as the late Type 39s: a S-Gërat sonar, a FuMO 21 radar and FuMB7 "Naxos" and FuMB8 "Wanz G" radar detectors.

The destroyer crews noted several underwater explosions after the last depth charge detonated, marking the end of the submarine, which sank at . Oil and debris later rose to the surface. No other Japanese submarine made contact with Task Force 58, and the submarine MacDonough and Stephen Potter sank probably was Ro-45. On 20 May 1944, the Imperial Japanese Navy declared her to be presumed lost off Truk with all 74 men on board.

On 29 August 1942, torpedoed the Burns Philp ship Malaita (3,310 tons gross) as she left Port Moresby, New Guinea. Malaita under escort by the Australian destroyer under the command of Commander J.C. Morrow. While Malaita was towed back to Port Moresby, Arunta made an asdic contact on Ro-33 and conducted a series of depth-charge attacks that sank the Japanese submarine southeast of Port Moresby at with the loss of all hands.

On 29 February 1944, while escorting a large convoy en route to Truk, Asashimo detected the submarine making a night surface approach on the convoy. Rock fired a spread of four torpedoes from her stern tubes at the closing Asashimo without scoring a hit. Illuminated by the destroyer's searchlight, and under fire from the ship's 5-inch (130 mm) guns, Rock dived. For four hours Asashimo continued depth charge attacks, without success.

On 16 December she escorted the submarines and through heavy seas to Boston and returned to Argentia on 24 December. Jacob Jones once again departed Argentia on 4 January 1942 escorting and . While steaming to join Convoy SC 63, bound for the British Isles, the destroyer made an underwater contact and commenced a depth charge attack. Losing contact with the submarine, she escorted her ships to the convoy and returned to Argentia on 5 January.

The stricken warship's screws stopped while her colleague's depth charge attack deprived Threadfin of definite knowledge of the ultimate result. That evening, the submarine tangled with a convoy composed of two small trawlers and four luggers. During the ensuing surface gun engagement, the submarine inflicted serious damage on two of the luggers, moderate damage on the trawlers, and minor damage on the remaining pair of luggers. Though disconcerting, the Japanese return fire proved ineffectual.

The remaining twelve Minekaze ships were modified to be used primarily as convoy escorts, with the removal of the amidship guns and the two aft torpedo mounts. Minesweeping gear on the fantail was replaced by four depth-charge launchers and 36 depth charges. Type 96 25-mm anti-aircraft guns were added in increasing numbers, and eventually totaled between 13 and 20 guns per vessel in a combination of single and twin mounts.

Significant upgrades were made to the weapons systems of the two ships which survived the Battle of Cape Matapan, similar to those made to the Maestrales. One torpedo-tube mounting was replaced by two 37 mm guns; 20 mm cannon, a 120 mm star-shell gun and depth charge throwers were also installed. Before the end of the war, one ship, Oriani, had German Seetakt radar and additional 20 mm cannon.Whitley, p.

U-269 was sunk on 25 June 1944 south-east of Torquay, in position . The U-boat was detected by the Royal Navy frigate , of the 5th Support Group, which immediately attacked with depth charges. The first attack knocked out all the lights aboard the U-boat, while the second ruptured the seals on the drive shafts, allowing water to rush in. The frigate's third depth charge run destroyed pipes, valves and electrical connections.

Nicholas pressed home two depth charge attacks, sinking I-88. Four days later, Nicholas joined TG77.1 on continuous patrol of the southern end of Leyte Gulf. There until 6 December she survived 4 attacks by kamikaze suicide-plane formations, 27 and 29 November and 2 and 5 December. On 6 December she assisted in a sweep of the Camotes Sea, bombarded Japanese Naval facilities on Ormoc Bay and then covered Allied landings there.

89 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft defence Gallant had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One rail and two depth charge throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

The shadowing U-boats lost contact after the convoy entered heavy fog after daybreak on 25 August, and discontinued pursuit on 26 August. U-256 was under repair for more than a year after being bombed in the Bay of Biscay on 31 August following depth charge damage from Viscount and Potentilla. U-438 aided U-256 reaching port, and U-174 refueled three Lohs U-boats before returning to France to repair damage.

Later that day, she received orders to screen LST Group "Dog" during its night retirement. While maneuvering at 15 knots through the congested transport area under poor visibility conditions, the destroyer escort struck a heavy floating object with her bow at 21:00. A few seconds later, an explosion occurred beneath her stern, as though a depth charge had exploded under the ship. After noticing marked vibrations, Vammen reduced speed to 10 knots.

HMS Kite of the 2nd Escort Group conducting a depth charge attack. In January 1944 2 SG sailed on its most famous exploit, accounting for six U-boats in one patrol, three of them in one 15-hour period. On 31 January 1944 Walker's group gained their first kill of the year when they sank . On 9 February his group sank , , and in one action, then sank on 11 February, and on 19 February.

On the top screen, the Colossus is moving to pick up the repair crew. On the lower screen, the Nautilus is preparing to retrieve the grey power core in the middle of the green building. A pink depth charge is falling behind the Nautilus, and frogman awaits the subs approach (on the bottom, green). Nautilus starts with player one in control of the submarine, visible in the lower pane of the split-screen display.

The boat dropped a depth charge near Terebinth, veered to starboard, and sped off as a violent explosion shook the net layer. Terebinth was not damaged. She then took station at the eastern side of the southern net entrance to Kerama Retto and directed traffic as it entered. The ship remained at this task until 6 April when she joined a salvage group off the Hagushi beaches to aid in retrieving landing craft.

The destroyer sped to the area of the sighting, and dropped a depth charge on a submarine travelling just below the surface. After completing the convoy run, the Australian warships completed the training, and were assigned to patrols of the Adriatic. For this, Parramatta was fitted with an observation balloon. On 16 November 1917, Parramatta and several sister ships came to assist the Italian transport Orione, whose stern had been destroyed by a torpedo.

Early on the morning of 10 November 1942, while passing between San Cristobal and Guadalcanal en route to Aola Bay on Guadalcanal, Southard encountered the Japanese submarine I-172 operating on the surface. She immediately slowed to and opened fire. I-172 submerged, and Southard commenced her first depth- charge attack. Southard lost contact with I-172 and did not regain it again until 06:07, almost three and one-half hours later.

Soon afterward, she underwent the inevitable depth charge attack by enemy planes, then she set course for a point south of Tawi-Tawi to reconnoiter. On the afternoon of 10 June Harder sighted a large Japanese task force, including three battleships and four cruisers with screening destroyers. An overhead plane spotted the submarine at periscope depth and a screening escort promptly steamed at toward her position. Once again, Harder became the aggressive adversary.

While thus engaged, she received orders to assist in searching for a Japanese submarine reported by a plane to be running on the surface in the vicinity. Accordingly, accompanied Ulvert M. Moore and joined La Vallette and . At 1557 on 30 January, La Vallette made contact and dropped a depth charge barrage but observed no results and soon lost the contact. The group continued to search throughout the night with negative results.

On 6 December 1916, sank the Russian sailing ship Ans (Later claimed to have been sunk by ). The P&O; vessel Kashmir sent out a radio warning, and later the same day Ariels lookouts spotted the conning tower of a submarine. A depth charge was dropped in the position of the submarine, but it failed to explode. Ariels explosive paravane was deployed, and after an explosion at about , oil and bubbles were observed.

The dreadnoughts did not sink, but reached port and underwent repairs. The submarine was later transferred to Gibraltar for operations in the Mediterranean. On 9 November 1918, during an engagement with , J1 launched a depth charge from a specially fitted launcher. J1 being refitted at Cockatoo Island Dockyard in 1919 After the war, the British Admiralty decided that the best way to protect the Pacific region was with a force of submarines and cruisers.

She just missed the U-boat's stern as it slid under the sea. After two depth charge attacks, Goldsborough lost contact. She then screened Core to Norfolk 18 January and proceeded to New York Navy Yard for voyage repairs. Thereafter, she escorted to Trinidad, returning to Norfolk as escort of then entered the Charleston Navy Yard on 21 February 1944 for conversion to a high-speed transport, and redesignation as APD-32, 7 March 1944.

Almost simultaneously, Turner turned hard to starboard and opened fire with her , Bofors, and Oerlikon guns. During the next few seconds, the destroyer scored one hit on the U-boat's conning tower as well as several 40- and 20-millimeter hits there and elsewhere. The submarine began to dive immediately and deprived Turner of any opportunity to ram her. However, while the U-boat made her dive, Turner began a depth-charge attack.

They are spotted by a destroyer and have to dive below test depth, the submarine's rated limit. During the ensuing depth-charge attack, the chief machinist, Johann, panics and has to be restrained. The boat sustains heavy damage, but is eventually able to safely surface when night falls. A British tanker they torpedoed is still afloat and on fire, so they torpedo it again, only to learn there are still sailors aboard.

Century Media imposed a strict deadline on the release date of the album; it was to be ready before the 2006 Ozzfest festival. Despite this, Townsend stated the recording was not rushed, and The New Black became a critical, as well as a commercial, success. It was more melodic than any of the band's previous albums and brought back the debut album's tongue-in-cheek humour. "Decimator" references "Depth Charge" from Accelerated Evolution.

Though she made many sonar contacts and depth charge attacks, Tattnall registered no confirmed kills. Early in July 1943, the destroyer escorted her last Caribbean convoy north from the Windward Passage to Charleston, South Carolina. She arrived on the 10th, began conversion to a high-speed transport at the navy yard, and was redesignated APD-19 on 24 July. On 6 September 1943, the day following the 25th anniversary of her launching, Tattnall completed conversion.

The four depth charge throwers were removed in 1932. The next year, the ship was present when the fleet was reviewed by the President of France, Albert Lebrun, in Cherbourg on 20 July 1933. About a year later, the 75-millimeter guns were replaced by four twin mounts for anti-aircraft machineguns. On 15 July 1935, Léopard and her sister of the 8th DL were assigned to the Naval School (Ecole Navale) at Brest.

VP-33 was destined to become one of ten well-known Black Cat squadrons operating in the South Pacific during WWII. After reaching the combat zone and being assigned its unique mission, the squadron submitted a new design to CNO. This insignia was approved on 17 April 1944. The black cat, the central character of the design, was shown armed with a telescope and depth charge and superimposed on an enlarged cat’s eye.

51 Anti-aircraft (AA) defense for the Freccia-class ships was provided by a pair of AA guns in single mounts amidships and a pair of twin-gun mounts for machine guns. They were equipped with six torpedo tubes in two triple mounts amidships. Although the ships were not provided with a sonar system for anti- submarine work, they were fitted with a pair of depth charge throwers. The Freccias could carry 54 mines.

While steaming back to Alexandria along with Vian's force, destroyer reported an apparently successful depth-charge attack on an unidentified submarine.Bartimeus p.190 The only axis submarine off Alexandria was the Italian , which was carrying a group of six Italian frogmen commandos, including Luigi Durand De La Penne, equipped with manned torpedoes. Shortly after Vian's force arrived in Alexandria, on the night of 18 December, the Italians penetrated the harbour and attacked the fleet.

The hull has depth charge blast holes: one forward of the conning tower at the radio room and another in the starboard side of the engine room. Entering the wreck is dangerous due to debris, sharp metal edges, and confined spaces. On 6 and 7 May 1945, Navy divers attempted to enter the wreck to recover the captain's safe and the papers within, but failed. Recreational divers first visited the site in 1953.

Rohwer&Hummelchen; (1992) pp.135&139 Churchill also served as an escort for the pre- and post-invasion buildup for Operation Torch, the Allied invasion of North Africa. Churchill was modified for trade convoy escort service by removal of three of the original /50 caliber guns and three of the triple torpedo tube mounts to reduce topside weight for additional depth charge stowage and installation of Hedgehog anti-submarine mortar.Lenton&Colledge; (1968) pp.

Of Mamutus 142 passengers and crew, 114 were lost. RO-33 struck again on 29 August, torpedoing the MV Malaita, which was returning to Cairns after delivering troops and supplies to Port Moresby. Although listing ten degrees to starboard, Malaita remained afloat, and was taken in tow by and . Their escort, the destroyer , picked up an ASDIC contact on the RO-33, and delivered a series of depth charge attacks and sank it.

Once again her task was to keep the shipping lanes free of enemy submarines, and she continued this duty through June. Then Lawrence C. Taylor accompanied Admiral Marc Mitscher's Fast Carrier Task Force as it attacked the Japanese mainland. The submarine patrol brought results, because Anzio planes sighted an enemy submarine on the night of 15 July. At 0240 the following morning the destroyer escort registered her second kill when her depth charge attack sank .

Blair, Silent Victory, p.243-5. Nautilus reported flames appeared along the length of the ship as the first hit, and the skeleton crew which had been aboard (survivors of which reported no torpedo hit) began going over the side, with the air flask of the dud torpedo acting as a life preserver for Japanese sailors. Nautilus went to as a prolonged depth charge attack commenced. At 16:10, the submarine rose to periscope depth.

For anti- aircraft (AA) defence, Duchess had a single 12-pounder (3-inch (76.2 mm)) gun and two quadruple Mk I mounts for the 0.5-inch Vickers Mk III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes.Friedman, pp. 215, 299 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

Following an unsuccessful attack, she was forced to dive deep to escape the ensuing depth charge attack from the destroyer and patrol aircraft. That night, near the mouth of Lombok Strait, she spotted what appeared to be the aircraft carrier , escorted by four destroyers. Sailfish fired four torpedoes, scoring two hits. Leaving the target aflame and dead in the water, Sailfish dove, the escorts delivering forty depth charges in the next 90 minutes.

This included her propulsion being changed from three coal and oil stoked boilers to two oil stoked boilers, her torpedo tubes being removed and depth charge throwers and smoke screen machines being fitted. Her seaworthiness was improved as well. Due to all the changes the complement was reduced to 34. Between 4 May and 20 June 1936, Z 5 went on exercises in the Baltic with Hertog Hendrik, O 9, O 10 and O 11.

For anti-aircraft (AA) defence, Dainty had a single 12-pounder (3-inch (76.2 mm)) gun and two quadruple Mark I mounts for the QF 0.5-inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for 21-inch torpedoes.Friedman, pp. 215, 299 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

As the submarine went deep, her crew heard the fourth and fifth torpedoes hit the second ship. After a jarring depth charge attack which lasted 38 minutes, Tang returned to periscope depth. Only the two escorts were in sight, and one of them was picking up survivors. On 14 August, Tang attacked a patrol yacht with her deck gun and reduced the Japanese ship's deck house to a shambles with eight hits.

The torpedoes missed their mark and, in the ensuing action, U-3 was rammed by Citta di Catania, which destroyed the U-boat's periscope. When she attempted to surface, she was shelled by the escorting destroyers. She submerged to escape the artillery but was further damaged by a depth charge attack from the French destroyer Bisson while resting on the seabed. When U-3 surfaced the following day, she was shelled and sunk by Bisson.

Her first action took place 9 April 1944, as her group sailed from Casablanca to the United States. was detected when her radio transmissions were picked up, and planes and ships of the task group pressed home a firm attack. Chatelain forced the enemy submarine to the surface with two depth charge attacks, then joined in the general firing at point-blank range which followed, sending U-515 to the bottom at .

A second quadruple 0.50 in machine gun mount was fitted in 1938. The close-in anti-aircraft armament was further supplemented in 1941, when three Oerlikon 20 mm cannon were added, while a further three Oerlikons replaced the multiple machine guns in 1942, while the saluting guns were removed during the war. The ship's depth charge loading increased to 60–90 during the war, while a Hedgehog anti-submarine mortar was fitted in 1943.

Early on 19 May the submarine was spotted by a Wellington, which directed the destroyers and as they carried out a sustained series of depth charge attacks that drove the submarine to the surface. The submarine was then bombed by a Ventura of 500 Squadron and shelled by the two destroyers before being sunk by Niblack. The squadron disbanded on 11 July 1944, handing over its Venturas to No. 27 Squadron SAAF.

In December 1938–January 1939, the bridge wings were enlarged to accommodate the Hotchkiss machine guns on Le Fantasque. After the war began in September, 200 kg depth- charge stowage increased to 48 and a pair of rails were installed on the stern for depth charges. Each rail could accommodate 3 depth charges and 15 more were stored in the magazine. In early 1940 twin-gun 37 mm mounts replaced the single-gun mounts.

The last vessel was canceled. 11 ships (Project 56PLO, Kotlin Mod.) were modified for enhanced ASW capabilities by adding rocket depth charge launchers. In 1962, the Soviet Navy installed the navalized version of the S-125 Neva, the SA-N-1 'Goa', to a surface-to-air missile Kotlin-class destroyer, Bravyi (also spelled Bravyy) for testing. The system used the 4K90 (V-600) missile that could engage targets at distances from and altitudes of .

Variable Depth Sonar (VDS) was also fitted; however, ASROC was not fitted. Ships that did not receive FRAM were typically upgraded with Mk 32 triple torpedo tubes in exchange for the K-guns, but retained Hedgehog and one depth charge rack. In Navy slang, the modified destroyers were called "FRAM cans", "can" being a contraction of "tin can", the slang term for a destroyer or destroyer escort. Many Allen M. Sumners provided significant gunfire support in the Vietnam War.

She made contact with a submarine and carried out three depth charge attacks, the third attack brought oil to the surface and the contact was noted to be stationary. A fourth attack of fifteen depth charges brought a huge bubble of air up. On 6 March, Tigris was ordered to Algiers but there was no reply to this signal. She failed to return to Algiers on 10 March 1943 and was declared overdue on that date.

She fitted out her no. 2 motor launch to patrol the anchorage on 11 May, arming it with a machine gun and a depth charge, and two days later issued 100 depth charges to . Underway on the morning of 14 May on the first leg of her homeward voyage, Bridgeport paused briefly at Grassy Bay from 21 to 26 May, and after picking up tug Conestoga and minesweeper on 26 May, ultimately reached New London on 29 May.

Edgar was damaged but did not sink; she suffered no casualties in the attack. The following day Prásil attempted to torpedo a ship in a convoy but missed and was exposed to a depth charge attack by the convoy's escorts. The U-boat ended the patrol with no further successes. In June, the Austro-Hungarian Navy planned an assault on the Otranto Barrage, similar to a May 1917 action that evolved into the Battle of Otranto Straits.

Realising this, Campbell left the men in the boats, destroyed all confidential papers, and radioed for help. His unorthodox message read: "Q5 slowly sinking respectfully wishes you goodbye".P.124, The Naval VCs, Stephen Snelling This message reached nearby naval shipping, and within an hour the destroyer and the sloop arrived and began to tow the stricken ship back to land. During the night a depth charge accidentally exploded on board Farnborough and she dropped the tow.

Thornycroft worked on the design and construction of vessels for the Royal Navy during the First World War, a service for which he was appointed a Knight Commander of the Order of the British Empire in 1918. This included design and construction of the first coastal motor torpedo boats and depth charge launchers. He also developed road vehicles, including a steam-powered wagon and an oil-engined tractor. After the war he continued development of ships and land vehicles.

By September 1917, Wolf had transferred to the Northern Division of the Coast of Ireland Station, headquartered at Buncrana, carrying out patrols in the North Channel between Scotland and the north of Ireland. By April 1918, she had landed her torpedo tubes and the aft gun to accommodate an anti-submarine armament of 18 depth charges and two depth charge throwers.Friedman 2009, p. 53. Wolf remained operating on the North Channel Patrol until the end of the war.

After Wesson maneuvered and dropped a 13 depth charge pattern, an anti-submarine patrol plane observed an oil slick. However, no other evidence appeared to confirm that an enemy submarine had been destroyed or damaged. The next day, the formation came under attack by Japanese planes. Wesson fired at three of the raiders; and one plane took several hits in the fuselage just above the wing before bursting into flame and crashing astern of the screen.

103 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p. 141 To compensate for the weight of her 60 Mark XIV mines and their rails, two of Esks 4.7-inch guns, their ammunition, both sets of torpedo tubes, her whalers and their davits had to be removed. She was given small sponsons at the stern to ensure smooth delivery of her mines.

It is uncertain if the ship's director-control tower was installed before a Type 271 target indication radar was installed above the bridge. At some point, the ship was converted to an escort destroyer. 'A' gun was replaced by a Hedgehog anti-submarine spigot mortar and additional depth charge stowage replaced the 12-pounder high-angle gun. A Type 286 short-range surface search radar was fitted and the HF/DF installation was moved to a pole mainmast.

Venomous and Marne began to rescue Heclas survivors, but Marne had pulled only 64 out of the water when U-515 torpedoed her at 02:11 hours, blowing her stern off. Venomous aborted her rescue operation to counterattack, then, with 493 Hecla survivors aboard, took Marne in tow. She then made another radar contact on U-515 and dropped her tow to attack the submarine, which she finally drove off with a series of depth charge attacks.

She emptied her stern tubes at the last and biggest ship, believed to be a transport, from a pointblank range, . The target, which carried a large deck cargo, took one hit aft and one under her stack. The submarine went deep, received a short depth charge attack, and came up to periscope depth to learn that her target had gone down. On 21 November, Trigger sighted a cargo ship and closed to before firing four torpedoes.

While searching the next day, , a destroyer escort in company, was torpedoed and sunk. Keith and a task group ships headed to the position where the Frederick C. Davis had gone down and launched a depth charge attack that lasted some 12 hours before was forced to surface. The destroyer escorts opened fire on the submarine; and Keith made two direct hits before the U-boat sank. After the engagement, Keith rescued four survivors from the submarine.

At 2245 Duncan detected a radar contact at ; and upon closing lost the radar contact, gained an ASDIC contact at , lost contact at , and dropped one depth charge. Upon returning to station Duncan detected a radar contact at ; and upon closing sighted a U-boat which dived at , and appeared on ASDIC at . Duncan dropped a pattern of ten depth charges; and, while turning for another attack, gained another radar contact. The radar contact disappeared at a range of .

She then headed back to Darwin for more, and stood out to sea again on 15 March with a fresh supply. Three days later, she emptied her bow tubes while attacking a small convoy, but all six either ran under their targets or missed wide of their marks. The inevitable depth charge barrage followed, but proved to be equally ineffective. When Bowfin attacked again later that day, she launched four torpedoes — all of which were wasted.

205 By October 1940, the ship's AA armament had been increased when the rear set of torpedo tubes was replaced by a (12-pounder) AA gun and 'Y' gun was removed to compensate for the additional depth charges added.Friedman, pp. 237, 241 Boreas was converted to an escort destroyer in late 1943 with the replacement of the 12-pounder high-angle gun with additional depth charge stowage. The 2-pounder mounts were replaced during the war by Oerlikon autocannon.

298 The ship mounted four 45-calibre QF 4.7-inch Mk IX guns in single mounts. For anti-aircraft (AA) defence, Brazen had two QF 2-pounder Mk II AA guns mounted on a platform between her funnels. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

298 The ship mounted four 45-calibre QF 4.7-inch Mk IX guns in single mounts. For anti-aircraft (AA) defence, Blanche had two QF 2-pounder Mk II AA guns mounted on a platform between her funnels. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

One 4-inch gun (in "A"-mount) was removed to accommodate a Hedgehog forward-throwing anti- submarine projector, while the remaining set of torpedo tubes and the 12-pounder gun was removed to allow the ship's depth charge armament to be increased again to as many as 150 charges. Radar was changed to a Type 271 surface search radar mounted on the ship's bridge, with a Type 291 air search radar on the mainmast.Brown 2007, pp. 19, 21.

After firing on the Neger with 20 mm and 40 mm cannon fire and dropping two depth charges, PC-558 successfully destroyed the vessel and captured the sole occupant, Oberfähnrich Walter Schulz. PC-558 was later joined by PC-626 and spotted another Neger. After another cannon and depth charge attack, the Neger was destroyed and the occupant was captured alive. PC-558 was later destroyed after being struck by a single torpedo fired by a German U-boat, .

At 13:23, an escort astern indicated contact but continued with the convoy after a brief delay. At 15;10 another escort on the starboard bow made a contact and ran alongside the starboard side of the convoy and, at 15:13 dropped one depth charge. Another escort joined the search, but a few minutes later they gave up the search and took station with the convoy. It was determined that they had run into a "wolf pack".

7.5-inch howitzer HMS Vindictive IWM Q 20555 The weapon was developed together with other similar devices early in 1917 and went into service in June 1917 in response to German unrestricted submarine warfare. It was mounted on merchant ships and patrol vessels. By 10 December that year, 377 were in service. The shell was fired at the submarine either on the surface or submerged - hence it had attributes of both armour-piercing shell and depth charge.

Eight 37 mm and six 20 mm guns comprised the close-in anti-aircraft armament. Some of the class (including Pizarro, Vasco Núñez de Balboa and Vicente Yáñez Pinzón) were originally armed with two 105mm (4.1 in) anti-aircraft guns instead of the 120mm guns before being rearmed with the intended armament. Anti-submarine armament consisted of four depth charge throwers while up to 30 mines could be carried. The ships had a crew of 250.

The Japanese depth charge attacks by its surface forces initially proved fairly unsuccessful against U.S. fleet submarines. Unless caught in shallow water, a U.S. submarine commander could normally escape destruction, sometimes using temperature gradients (thermoclines). Additionally, IJN doctrine emphasized fleet action, not convoy protection, so the best ships and crews went elsewhere. Moreover, during the first part of the war, the Japanese tended to set their depth charges too shallow, unaware U.S. submarines could dive below 150 feet (45m).

Five River-class ships with a British destroyer at Brindisi in 1917 In July 1917, all six ships rendezvoused off the Cocos Islands: the first time the entire class had been in one location. From there, the River-class destroyers proceeded to the Mediterranean. On arrival at Malta, they were immediately deployed as escorts for a convoy. After this, the destroyers were modified for anti-submarine warfare: the aftmost torpedo tube was removed and replaced with depth charge rails.

On 19 May, she intercepted three small freighters. Her torpedoes ran beneath the targets, and the "freighters", a disguised hunter-killer group, converged on the area where Ray had dived, laying a depth charge pattern. The submarine surfaced and fired her deck gun at her pursuers as she dashed away at flank speed. The remainder of the patrol was devoted to attacking patrol craft and coastal vessels with gunfire until it ended at Midway on 16 June.

One or other of the patrol boats Murature and King were involved in all six depth-charge or gunnery attacks along the coastal shallows: Murature on 4th, 7th (evening), 11th and in company with King on 16 February 1960: King on 5th, 7th (morning) and along with Murature on 16 February 1960. Along with her sister ship ARA King, Murature was the oldest unit still in service in the Argentine navy as of 2014.A.R.A. "Murature" - P 20 histarmar.

Rock, in company with and , departed Majuro on 22 June 1944, in a coordinated attack group to patrol the Luzon Strait. At dawn on 19 July Rock attacked a Japanese convoy of seven large ships and three escorts, firing 10 torpedoes, six of which exploded. But, as she immediately dove to escape a depth-charge attack, she could not observe their effect. Two days later Rock contacted another enemy convoy consisting of six large ships and four escorts.

While maneuvering to finish off the crippled ship, several antisubmarine vessels appeared on the scene from behind a nearby headland and converged on the fleet boat. Trepang dove deep as the Japanese subjected her to a seven-hour depth charge barrage. On 14 March, Trepang sank the IJN Guardboat Kaiko Maru off Inubosaki.Official Navy Chronology 14 March 1945On 17 March, Trepang attacked and sank 117-ton picket boat Tsukiura Maru (converted bonito & tunny fishing boat) off Torishima.

After entering British service, the destroyers were modified with British radar, asdic and depth charge throwers. Two of the torpedo tube mounts were removed to make space for an Oerlikon 20 mm cannon, the aft 4-inch gun was replaced by a British 12-pounder gun and Type 273 radar was installed. Two boilers were removed and fuel storage was increased to improve range. The destroyer's final layout was three 20 mm Oerlikon cannon, one 3-inch gun, two .

U-66 broke off her pursuit after two hours, having endured multiple attacks from Falmouths screening destroyers. One depth charge attack blew out all the lights on U-66 and knocked clips off two hatches that caused the boat to flood with a considerable quantity of water before the leaks could be sealed. Falmouth continued under tow at until she crossed Standlinie II and was attacked and sunk by U-63 around noon the next day.

Still in the area on 3 May, S-47 became the target of a three-hour submarine hunt conducted by two destroyers and two minesweepers and punctuated by frequent depth charge attacks. That night, she cleared the area. By 5 May, she was off New Hanover; and, on 8 May, she fired on a cargoman which reversed course and headed for the submarine at high speed. S-47 went deep and readied two tubes for firing.

On 30 October, Salmon attacked a large tanker that had been previously damaged by Trigger. This tanker was protected by four antisubmarine patrol vessels which were cruising back and forth around the stricken ship. Salmon fired four torpedoes and made two good hits, but was forced to dive deep under a severe depth charge attack by escort CD-29. She leveled off at but was soon forced to nearly due to damage and additional pounding of the depth charges.

89, 102 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft (AA) defence, Hotspur had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

89, 102 The ship mounted four 45-calibre 4.7-inch (120 mm) Mk IX guns in single mounts. For anti-aircraft (AA) defence, Hereward had two quadruple Mark I mounts for the 0.5 inch Vickers Mk III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for 21-inch torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

89, 102 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft (AA) defence, Hunter had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

89, 102 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft (AA) defence, Hasty had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

89 The ship mounted four 45-calibre 4.7-inch (120 mm) Mark IX guns in single mounts. For anti-aircraft (AA) defence, Griffin had two quadruple Mark I mounts for the 0.5 inch Vickers Mark III machine gun. She was fitted with two above-water quadruple torpedo tube mounts for torpedoes. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

The convoy escorts effectively intercepted attacks through the pre-dawn hours of 25 August. The calm sea conditions were favourable for the Type 271 centimeter-wavelength RADAR with which all the escorts were equipped, and prompt counter-attacks prevented the U-boats from reaching torpedo launch positions. A depth charge attack by Eglantine holed the conning tower of U-605.Rohwer & Hummelchen p.157 U-135, U-174 and U-438 were also damaged by depth charges.

Christabel headed for the wake, making all possible speed, which was around , whereupon the wake disappeared and a number of oil slicks were seen. The U-boat had apparently submerged. The American commanding officer ordered his ship to follow this oil for as long as possible and at 17:24—believing that his ship was just ahead of the submarine—Christabel′s crew dropped a depth charge, but nothing resulted although the charge exploded. Daniel Sullivan, MOH.

U-558 took a hit from a depth charge dropped by a Catalina flying boat, but did not sustain serious damage and continued to shadow the convoy. She returned to Brest on 25 October 1941, having sunk four ships in the 15 days of her fourth patrol. U-558s fifth patrol began on 24 November 1941. On 2 December, a British aircraft spotted the U-boat attempting to enter the Mediterranean Sea and called for surface support.

In late February 1942 she was withdrawn for conversion to a short-range escort (SRE). To augment the earlier changes, the replacement of the after bank of torpedo tubes with a single QF 12 pounder 12 cwt naval gun and the landing of 'Y' gun for additional space for depth charge gear and stowage, a Type 271 centimetric target indication radar was added on the bridge and a Type 286P air warning radar was installed on the main mast.

Four days later, TG 22.3 reached the Naval Air Base at Argentia, Newfoundland, for a brief period of in-port upkeep. The group subsequently resumed hunter-killer operations soon thereafter; and, during the ensuing patrols, Willis obtained a sonar contact at 1147 on 14 September. She fired a pattern of "hedgehogs" and made two depth charge runs before she laid a sonobuoy pattern. Swenning joined the search at 1600, and the two destroyer escorts made a coordinated attack.

Grundy helped in the evacuation of Americans from China during the Chinese Civil War. In December 1945, he was reassigned to Naval Station Norfolk located in Norfolk, Virginia, as Assistant Chief of Staff (Discipline), 5th Naval District. Griggs-Grundy News (PDF). "Military Locator & Reunion Service, Inc." Volume 2, Issue 4, December 2001, Retrieved May 21, 2008 Rear Admiral Rafael Celestino Benítez was a Lieutenant Commander who saw action aboard submarines and on various occasions weathered depth charge attacks.

The Nazis, believing Popeye to be dead, emerge from their U-boat and salute; all of Popeye's spinach falls through the U-boat's bulkhead door. Popeye, dazed and unconscious, topples down to the ocean floor, with the U-boat's propeller atop his head like a beanie. Popeye quickly regains consciousness and takes out a can of spinach, using the spinning propeller as a can opener. Swallowing its contents causes Popeye's arm to grow a depth charge.

In early February 1916, U-14 joined for a patrol near Durazzo. U-4 came closest to scoring a success when she narrowly missed hitting , a British on 7 February. U-14 survived a depth charge attack, but made it back to port with all of her externally mounted torpedoes crushed and both fuel tanks leaking. When she put in for repairs, U-14 was extensively modernized in a refit that kept her in port from February to November.

In early 1941, Tanager received a major overhaul which transformed her silhouette. Her heavy foremast and boom were removed; splinter-shielding was added around her guns and upper bridge; and a depth-charge track was fitted astern. Thus outfitted, she lost excess topside weight and had better fields of fire for her anti-aircraft battery. Assigned to Mine Division 9, Asiatic Fleet, Tanager sailed from Pearl Harbor on 11 May 1941, bound for the Asiatic Station.

Continuing her patrol, Harder sighted two more ships 13 September, but she was forced down by enemy planes while firing torpedoes. Escorts kept the submarine down with a severe depth charge attack which lasted for over two days and almost exhausted her batteries. After evading the Japanese ships, Harder detected her next target 19 September; a torpedo sent Kachisan Maru to the bottom almost immediately. Though running in bad weather, Harder continued to find good targets.

The submarine submerged before Remliks gun crews could fire. The submarines periscope reappeared three times, but the extremely rough weather prevented the submarine from firing her torpedoes and she finally disappeared. Remlik, although prohibited from using her depth charges by her speed - only 2 knots against the gale - remained in the area in the hope that the submarine would reappear. Shortly after the submarine was last seen, however, the depth charge box on Remlicks taffrail aft was washed overboard.

Sandwich reached a speed of during sea trials and was commissioned on 23 March 1929. In 1938, the aft four-inch gun was replaced by one on a high-angle mounting and the two saluting guns were exchanged for a pair of quadruple Vickers anti-aircraft (AA) machinegun mounts. By the outbreak of the Second World War, the ship had been fitted with ASDIC, and the depth charge outfit was increased to 15 charges.Brown 2007, p. 23.

A pair of reload torpedoes was provided for each mount. Leberecht Maass had four depth charge launchers mounted on the sides of her rear deckhouse, which was supplemented by six racks for individual depth charges on the sides of the stern, with either 32 or 64 charges carried. Mine rails could be fitted on the rear deck that had a maximum capacity of 60 mines. A system of passive hydrophones designated as 'GHG' (Gruppenhorchgerät) was fitted to detect submarines.

W-2 joined HX-330 on 3 January 1945 at New York after leaving ON-272 in that port. With Border Cities were Orillia, Midland, , and . On the 4th, hedgehog and depth charge attacks made by Midland on a contact, brought up oil which took fire. Border Cities, the Senior Officer's Ship, considered that the contact had been bounced off a wreck, although she admitted that the existence of one in the position was not confirmed by chart.

Refrigerator (1988–1999) was an Appendix Quarter Horse racehorse who won the Champions of Champions race three times. He was a 1988 bay gelding sired by Rare Jet and out of Native Parr. Rare Jet was a grandson of Easy Jet and also a double descendant of both Depth Charge (TB) and Three Bars (TB). His dam was a daughter of Heisanative, a son of Raise a Native (TB) and a grandson of Native Dancer (TB).

U-214s seventh patrol took her to the waters off Panama. While outbound on 9 September, south-west of Santa Maria, Azores, she was attacked by an American Grumman TBF Avenger aircraft from the escort carrier . The aircraft approached by radar and dropped four depth charges, but was damaged in the air intake and the bomb bay by the U-boat's flak. One depth charge hit the U-boat, but bounced off and exploded without damaging her.

K-16 also attacked with 7.2-inch rocket bombs. Numerous depth charge and hedgehog attacks from Atherton and Moberly resulted in planking, life rafts, a chart tabletop, clothing, and an officer's cap floating to the surface. With the loss of all 55 officers and men, U-853 was one of the last U-boats sunk during World War II and, with , the last to be sunk in US waters. Atherton and Moberly received credit for the kill.

In 1944, Hiyodori and the surviving ships of the Otori class had their aft 12 cm gun and their single 40 mm Vickers gun replaced with several 25 mm anti- aircraft mounted in five single mounts and three twin mounts, granting her a total of 11 machine guns. The paravanes were also replaced with additional depth charges and depth-charge throwers, bringing the total number of depth charges on board to 48, and her standard displacement to 1,043 tonnes.

A Socony tanker, , was torpedoed off Cape Hatteras, North Carolina, and Tarbells lookouts sighted her distress flares a little before 0900. The destroyer rang up full speed; and, one-half hour later, she arrived at the scene of the attack. She dropped a depth charge barrage to drive off any U-boats lurking in the vicinity and then picked up 22 survivors. After a futile search for the enemy submarine, she disembarked the survivors at Morehead City, North Carolina.

PT boats also commonly carried between two and eight U.S. Navy Mark 6 depth charges in roll-off racks. Sometimes they were used as a last-ditch weapon to deter pursuing destroyers. The depth charge could be set to go off at , and by the time it exploded, the pursuing destroyer might be above it. Additionally, a few PT boats were equipped to carry naval mines launched from mine racks, but these were not commonly used.

Stratagem departed Trincomalee for the last time on 10 November 1944, with orders to patrol in the Strait of Malacca. Nine days later, she torpedoed and sank the Japanese tanker Nichinan Maru in the Strait, the only victory in her career. On 22 November 1944, the submarine was detected by aircraft and attacked with depth charges by the Japanese submarine chaser CH 35. The first depth charge caused Stratagems bow to hit the sea bottom and caused flooding.

His 1st watch officer on this patrol was Oberleutnant zur See August Maus, 2nd watch officer was Lauzemis. Merten did not sink any ships on this patrol. During the first five days of this patrol, U-68 came under a depth charge attack and was almost rammed by a Royal Navy destroyer south of Iceland. Merten later attempted to torpedo strangler and came into contact with a British convoy, which he lost again without shooting a single torpedo.

Hubbard sailed on 26 December 1944 with other destroyer escorts to hunt down weather-reporting U-boats in the Atlantic. Equipped with the latest direction-finding gear, the ships scouted the suspected area until they came upon on 16 January 1945. Depth charge attacks sank the German marauder late that morning. The ships arrived New York on 6 February and, after additional training in Casco Bay, sailed again to search for submarines 4 April from NS Argentia, Newfoundland.

Initially, the battalion was organized into a headquarters section, medical, radio, and transportation sections, and three troops designated 1, 8 and 9, the last being responsible for using Depth Charge Projector Mark 6, Mod 1, commonly called the "K-Gun"; 177 men in all. In 1944, the battalion was expanded to three troops, with the Headquarters troop and A & B Troops performing the usual land commando role. A large number of the battalion's personnel came from Brittany.

For anti- aircraft (AA) defence, Daring had a single 3-inch (76.2 mm) QF gun between her funnels and two QF 2-pounder Mk II guns mounted on the side of her bridge. She was fitted with two above-water quadruple torpedo tube mounts for 21-inch torpedoes.Friedman, pp. 215, 299 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

Loud internal explosions and breaking-up noises were heard while the submarine dived to escape a depth charge attack. Abruptly, a cruiser appeared and, fearing that she would broach the surface, Sailfish went to , losing a chance at this new target.Blair, p. 529. Shortly afterwards, the carrier Chūyō () went to the bottom, the first aircraft carrier sunk by an American submarine in the war, and the only major Japanese warship sunk by enemy action in 1943.

The Kriegsmarine's destroyers never ventured out into the open Atlantic Ocean, but stayed in European coastal waters. During the destroyer's depth charge attack more than eighty depth charges are detonated in the film, despite the fact that they rarely carried more than thirty. Furthermore, when U-571 is being depth- charged, the German destroyer is using active sonar pings. The Kriegsmarine never developed active sonar, but used passive sonar (basically a very sensitive listening device) instead.

C-mel nearly convinces the ships to go to war against the Time Lords, however the Doctor (using a sofa inside a gravity bubble) appears and manages to talk the ships down. He leaves Chris and feLixi fishing and to Chris' surprise the fish he catches is intelligent and he throws it back. The returning Doctor is annoyed by this and re-catches the fish to question it. The fish confirms that a depth charge caused the micro-tsunami.

On 16 March 1918, Aubretia was involved in action against a suspected submarine whilst escorting convoy HE7. Following depth charge action by other vessels, Aubrietia spotted disturbance in water and dropped one charge. Spotting oil on the surface, Aubrietia dropped two more charges. In May 1918 Aubrietia formed part of the Northern Patrol, but by the end of the war had transferred to the 3rd Sloop Flotilla based out of Dundee and operating in the North Sea.

Later, Belfast Castle was taken over and included a radio station. There were depth charge pistol and Hedgehog repair workshops associated with HMS Caroline, some of which would have been on the quays beside her berth in Milewater Basin. During the early part of the Second World War when RAF Belfast occupied Sydenham (Belfast harbour) airfield, Fleet Air Arm personnel based there were lodged under HMS Caroline. In 1943, the airfield was transferred to the Admiralty and commissioned as .

Partridge had a main gun armament of five 4-inch (102 mm) QF Mark V anti-aircraft guns in single mounts. Close-in anti-aircraft armament of one quadruple 2-pounder "pom-pom" mount together with four single Oerlikon 20 mm cannon, with two on the bridge wings and two further aft abreast the searchlight platform. A single quadruple 21-inch (533 mm) torpedo tubes was carried. Four depth charge throwers were fitted, with 70 depth charges carried.

Annan proceeded to drop depth charges on U-1006 even though they did not initially believe the contact was a U-boat. Annan then returned to the 6th EG where also made contact with U-1006 and ordered Annan to attack again. The first depth charge attack had badly damaged U-1006 and forced her to surface. U-1006 was able to fire a torpedo at Annan as she approached, but it detonated prematurely causing no damage.

The barrage attack was developed during the Battle of the Atlantic in World War II as an anti submarine measure. It was first used by 2 Support Group of the Royal Navy after being developed by the Group's commanding officer, Captain "Johnnie" Walker. The barrage attack was a measure devised by Walker to deal with a U-boat that had gone deep, and was using the time taken by the attacking escort’s depth charges to sink to move aside. The design of submarines, to resist the enormous pressure of the water at depth, made them also resistant to the effects of underwater explosions; a depth charge of the Second World War would need to explode within 26 feet of its target to have any serious effect. The barrage, referred to by the group as “the bosses special” involved three ships moving in line abreast over the target area; at the word of command each ship would lay a series of depth charge patterns, one after the other, in a carpet.

This varied considerably in different ships as the war went on; for example, the specified pair of twin guns were not widely available until mid-1942 and a quadruple machine cannon mount and a gun were temporarily substituted. In 1945 sixteen ships (DD-423, 424, 429–432, 435, 437–440, 443, 497, 623, 624, and 628) were modified for maximum light AA armament as an anti-kamikaze measure, with four 5-inch guns, no torpedo tubes, twelve 40 mm guns in two quad and two twin mounts and four 20 mm guns in two twin mountings.Friedman, p. 107 Photographs indicate that, as with most pre-1942 destroyers, the initial anti-submarine armament of two depth charge tracks was augmented with four or six K-gun depth charge throwers in 1941–42 on most ships.NavSource Destroyer Photo Index Page In 1943 twelve ships (DD-493, 609, 620, 622, 623, 635, 637–639, and 646–648) were temporarily equipped with three Mousetrap ASW rocket launchers, but this was unsuccessful and the only such installation on post-1930 US destroyers.

Kiso, Tama and Kitakami were the only in the class to receive radar. In August 1941 Ōi, Kitakami and Kiso were to undergo a conversion to torpedo cruisers to form a special torpedo attack squadron, but not enough Type 92 quadruple torpedo mounts were available so only the first two were converted,Stille, Imperial Japanese Navy Light Cruisers 1941-45 , page 16; both ships three aft turrets were replaced by ten quadruple torpedo mounts, five per side, with a total of 40 torpedoes. In August 1942, they were modified into fast transports, with all of the torpedo tubes removed and replaced by Daihatsu class landing craft, with depth charge racks and two Type 96 triple-mount anti-aircraft guns. After Kitakami was damaged in 1944, she was converted into a kaiten carrier, with all of her armament removed, and replaced by two Type 89 single gun turrets (fore and aft), a total of 67 Type 96 anti-aircraft guns(12 triple, 31 single), two depth charge racks and eight Model 1 Kaiten.

The Electric Boat-built Porpoises had been built to an all-welded design. Conservative engineers and shipfitters at the Government yards stuck with tried and true riveting. Electric Boat's method proved superior, providing a stronger and tighter boat, as well as preventing leakage of fuel oil tanks after depth charge attacks.Blair, Silent Victory Finally convinced of the efficacy of Electric Boat's innovation, Government yards finally converted wholesale to welding for their three Salmons and the Navy was entirely happy with the results.

She also mounted four Mle 1929 heavy machine guns in two twin mounts located between the forward superstructure and the forward guns. Volta carried 10 above-water tubes: a pair of triple mounts between the funnels and a pair of double mounts aft of the rear funnel. A pair of depth charge chutes were built into Voltas stern; these housed a total of 16 Guirard depth charges. Mine rails were fitted on the rear deck that had a maximum capacity of 40 mines.

East of Samar on 18 November 1944 during an ASW patrol in the Philippine Sea, Task Group 30.7's was alerted to the presence of a Japanese submarine in her operating area by an "Ultra" signals-intelligence message. Anzios aircraft conducted an ASW sweep. One of the aircraft reported a radar contact on a submarine on the surface. After a 14-hour hunt, , in a coordinated depth charge attack with her sister ship and two planes from Anzio, sank I-41 at .

Rockingham was modified for trade convoy escort service by removal of three of the original /50 cals and three of the triple torpedo tube mounts to reduce topside weight for additional depth charge stowage and installation of hedgehog.Lenton&Colledge; (1968) pp.92-94 Rockingham was assigned to Escort Group B-1 of the Mid-Ocean Escort Force for convoys ON 96, SC 105, SC 119, ON 171, HX 230 and HX 236 during the winter of 1942–43.Rohwer&Hummelchen; (1992) pp.

On 4 November U-81 left Brest bound for La Spezia in Italy. On 13 November off Gibraltar, she encountered the inbound ships of Force H. She fired a single torpedo into the aircraft carrier , and then avoided depth charge attacks from the escorts. Despite efforts to salvage her, the Ark Royal had to be abandoned some 12 hours after the attack and capsized some two hours later and sank. Only one life was lost due to the torpedo explosion.

The boat dived and suffered only minor damage from the subsequent depth-charge attacks, then returned to Malta after three days, ending her patrol. On 25 May 1944, Sportsman departed Malta for Gibraltar, arriving on 31 May, then, after conducting training exercises, left for Holy Loch on 9 June. She arrived on 20 June, and left the next day for Scapa Flow. The submarine then sailed for Dundee on 25 June, and conducted additional training until 3 September, when she shifted to Blyth.

In 1942, equipped with depth charge rack, she acted as an escort to convoys in the Sea of Åland, and hunted suspected hostile submarines near Helsinki. In the beginning of June 1944, Vesikko escorted the convoys which were evacuating people from the Karelian Isthmus. Due to the armistice between Finland and the Soviet Union, Vesikko was ordered to return to port on 19 September 1944. Vesikko sailed the last time as a combat vessel of the Finnish Navy in December 1944.

Diesel electric machinery was chosen for its controllability and resistance to damage. Southwind, along with the other Wind-class icebreakers, was heavily armed for an icebreaker due to her design being crafted during World War II. Her main battery consisted of two twin- mount deck guns. Her anti-aircraft weaponry consisted of three quad-mounted Bofors 40 mm anti-aircraft autocannons and six Oerlikon 20 mm autocannons. She also carried six K-gun depth charge projectors and a Hedgehog as anti- submarine weapons.

103 One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.English, p. 141 By April 1941, the after bank of torpedo tubes had been replaced with a QF 12-pounder 20-cwt anti-aircraft gun,"Cwt" is the abbreviation for hundredweight, 20 cwt referring to the weight of the gun. the after mast and funnel being cut down to improve the gun's field of fire.

English, pp. 69–70 In September 1939 she was allocated to the 12th Destroyer Flotilla, with which she served on escort and patrol duties. Escapade unsuccessfully attacked single U-boats in the English Channel on 5 November and 15 November, rescuing survivors from the torpedoed SS Navasota on 5 December.Haarr 2013, p. 446 Escorting convoy HN14 to Norway on 25 February 1940, she spotted the surfaced U-63, but the submarine dived as Escapade approached, after which she made a depth charge attack.

Very large depth charges, including nuclear weapons, may be detonated at sufficient depth to create multiple damaging shock waves. Such depth charges can also cause damage at longer distances, if reflected shock waves from the ocean floor or surface converge to amplify radial shock waves. Submarines or surface ships may be damaged if operating in the convergence zones of their own depth charge detonations. The damage that an underwater explosion inflicts on a submarine comes from a primary and a secondary shock wave.

Before the design was finalized, the Imperial Japanese Navy General Staff Office intervened, and insisted on the addition of a centerline-mounted Type 92 quadruple torpedo launcher with reloads, firing the Type 93 "Long Lance" torpedo. The class also carried two Type 94 depth charge projectors and 54 depth charges. These were increased to 72 depth charges for some of the later production vessels. The hull was 50 feet longer, and the displacement was 700 tons larger than the preceding Kagerō-class.

As the convoy passed overhead at 0530, U-258 rose to periscope depth and launched two torpedoes at McKeesport. After one torpedo hit McKeesport on the starboard bow, Northern Gem detected U-258 and dropped three depth charges. Snowflake dropped a single depth charge on a doubtful SONAR contact at 0605 and two more depth charges at 0615 after contact was regained at a range of . McKeesport was abandoned and sunk by the escort to prevent discovery of classified documents by German boarders.

Several hits were scored, and the enemy U-boat went under only to be met with another depth charge barrage. Large oil slicks and debris resulted, proving the destruction of the German U-boat. The only survivor of the 52 men aboard, Captain Klaus Bargsten, was rescued by PC-565 and his testimony substantiated PC-565's victory. Departing New York on 25 March 1944, PC-565 sailed to England where she joined the amphibious forces in preparation for the D-Day landings.

On 12 May, she sighted two periscopes and opened gunfire on who dived quickly but not before Frazier had scored hits on the periscopes. Immediately gaining sonar contact, the destroyer began a depth charge attack which brought air bubbles, oil, and debris to the surface. Two more attacks ensured the submarine was sunk. Early in the foggy morning of 10 June, with Lieutenant Commander Elliot M. Brown in command, she made two separate attacks on radar contacts which were believed to be submarines.

Stewart, pp. 59–61 Ensign Kazuo Sakamaki swam ashore and was captured by Hawaii National Guard Corporal David Akui, becoming the first Japanese prisoner of war. A fourth had been damaged by a depth charge attack and was abandoned by its crew before it could fire its torpedoes.Stewart, Those Mysterious Midgets, pp. 61–62 Japanese forces received a radio message from a midget submarine at 00:41 on December 8 claiming damage to one or more large warships inside Pearl Harbor.

In addition, her depth charge stowage was increased to 60. 'Y' gun was removed to compensate for the additional weight and two more Oerlikons were added during a refit in April 1942. When the ship was converted into an escort destroyer beginning in January 1943, a split Hedgehog anti- submarine spigot mortar was installed on each side of 'A' gun, the 3-inch AA gun was removed and the rear torpedo tubes reinstalled, and stowage was increased to 125 depth charges.English, p.

298 The B-class destroyers mounted four QF 4.7-inch (120 mm) Mk IX guns in single mounts. For anti-aircraft (AA) defence, they had two QF 2-pounder Mk II AA guns mounted on a platform between their funnels. The ships were fitted with eight above-water torpedo tubes in a pair of quadruple mounts. One depth charge rail and two throwers were fitted; 20 depth charges were originally carried, but this increased to 35 shortly after the war began.

For fire control, the class used the Fuze Keeping Clock High Angle Fire Control Computer.Destroyer Weapons of WW2, Hodges/Friedman, The "Cr" group was fitted with the new Mk VI HA/LA Director while remote power control (RPC) gunlaying equipment was fitted. The additional weight of the new fire control equipment and the powered mountings for the 4.5 inch guns meant that only one quadruple torpedo mount was fitted, and the depth charge armament was reduced to 35 depth charges.Whitley 2000, pp.

Loud mechanical sounds, of "hammering" and "turbine-like noises" were reported and, believing this to be a U-boat, a marker buoy was dropped, followed shortly after by a depth charge. Following detonation of the charge, TB 055 returned to the area and found that the volume of floating oil had increased, and there were bubbles rising to the surface. TB 055 signalled the nearby armed minesweeper HMT Sarba for assistance. Sarba used her hydrophone but detected no sounds from the presumed submarine.

Jordan & Moulin, pp. 20–21, 206, 209–11, 213–14 Tigre and Chacal escorted the light cruiser to French West Africa between 13 January and 10 April 1931 and the four depth charge throwers were removed in 1932. The ship was assigned to the 9th DL of the Torpedo Training School (Ecole d'application du lancement à la mer) at Toulon on 1 October 1932. About two years later, the 75-millimeter guns were replaced by four twin mounts for anti-aircraft machineguns.

In December 1938–January 1939, the bridge wings were enlarged to accommodate the Hotchkiss machine guns. After the war began, depth-charge stowage increased to 48 and a pair of rails were installed on the stern for depth charges. Each rail could accommodate 3 depth charges and 15 more were stored in the magazine. In early 1940 twin-gun 37 mm mounts replaced the single-gun mounts and a single Browning 13.2-millimeter anti-aircraft machine gun was installed on the quarterdeck.

Personal Log of LTJG F.X. Moffitt On 7 February 1944, at 08:25, an escort off of the starboard beam hoisted the black pennant and dropped a depth charge. At 09:00, two British aircraft carriers and seven sloops as escorts rendezvoused with the convoy. At 12:55, an escort ahead indicated an underwater contact and, at 13:02, dropped five depth charges in quick succession. LST-21 went to General Quarters but the escort later gave up the search.

She remained submerged for two hours after Taylor′s depth-charge attack, and her interior temperature rose to before she surfaced toward evening. She headed for the northwest coast of Kolombangara so her crew could inspect her damage and make repairs. The crew found several dents in her hull and determined that her damaged periscope required replacement. After sunset, Ro-101′s crew observed searchlights and heard heavy gunfire to seaward as U.S. and Japanese warships fought the Battle of Kolombangara.

On 2 April 1944, Carmick made two depth charge attacks with inconclusive results on an enemy submarine detected by sound contact. Later the same day, she successfully dodged a torpedo. On 18 April, Carmick cleared Boston for Plymouth, England, arriving 28 April to prepare for her role in the mighty naval force mounting the invasion of Europe. On 6 June (D-Day), she took station guarding the flanks of the leading ships off Omaha Beach, acting as antisubmarine and anti-E-boat screen.

Both torpedoes hit; and the tanker loaded with gasoline exploded into a column of flame high, with parts of the ship being blown from the flaming hulk. The escorts fired wildly and laid depth charge patterns astern of Rasher. In a second surfaced approach to Rasher launched a spread of six bow torpedoes at 2310. Three torpedoes hit and sank the transport Teia Maru, killing 2,665 Japanese soldiers, and a fourth torpedo was heard exploding at a timed range of 3900 yards.

Her third sortie was marked by a depth charge and strafing attack on 27 June 1943 by a Sunderland flying boat of No. 201 Squadron RAF. The damage incurred was serious enough to warrant her return which was hampered by another attack by a Sunderland, this time from No. 10 Squadron RAAF on 30 June in the Bay of Biscay. This incident caused no further damage, but the aircraft's rear gunner was mortally wounded. The boat docked in Bordeaux on 3 July.

The ongoing depth charge attacks caused serious damage to the submarine and especially to the SLC units which were beginning to flood. At 8:30 on September 30, 1940, Gondar had to surface, due to sustained damage and almost completely exhausted reserves of oxygen. Upon surfacing, the crew scuttled the boat with explosive charges. Except for electrician Luigi Longobardi, who was killed by one of the bombs dropped by a Sunderland flying boat, the entire crew was rescued and imprisoned by the British.