Depth charge
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A depth charge is an anti-submarine warfare weapon designed to destroy submarines by detonating in the water near the target and subjecting it to a destructive hydraulic shock. Most depth charges use
US World War II 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 200 lb (91 kg) of Torpex.
The Mk 101 Lulu was a US nuclear depth bomb operational from 1958 to 1972
Depth charges on USS Cassin Young (DD-793)
Depth charge exploding after being released by HMS Ceylon
Naval mine
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A naval mine is a self-contained explosive weapon placed in water to damage or destroy surface ships or submarines. Similar to anti-personnel and other land mines, and unlike purpose launched naval de
Depth charge
…Bouncing bomb, the specialized air-delivered depth charge–like bomb used for the RAF's Operation Chastise Naval mine Shock factor…
Polish wz. 08/39 contact mine. The protuberances near the top of the mine, here with their protective covers, are called Hertz horns, and these trigger the mine's detonation when a ship bumps into them.
British Mk 14 sea mine
A 14th-century illustration of a naval mine and page description from the Huolongjing
David Bushnell's mines destroying HMS Cerberus's tender on 13 August 1777