German submarine U-99 (1940)
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German submarine U-99 was a Type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II. She was laid down on 31 March 1939 at the Friedrich Krupp Germaniawerft in Kiel as yard number 593. She
U-52, a typical Type VIIB boat
Painting of Merisaar's lifeboat approaching U-99 on 12 July 1940
Empire Brigade
Postcard of Laurentic
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