German U-boats targeted both cargo and passenger ships. On May 7, 1915, the U-20 sank the Lusitania off the coast of Ireland, killing nearly 1,200 people, including 128 Americans.

Its purpose was to build and test U-Boats. This imposing concrete structure in the German city of Bremen is 1400 feet long, 300 feet wide and 90 feet high, and looks every inch the secret Nazi ...

or U-boats, sunk, scuttled, captured, or otherwise lost to German forces during World War II. Here, naval historian Timothy Mulligan describes 25 of the most historically significant U-boats.

Explorers say they’ve found a British warship sunk by a German U-boat in WWI Explorers say they’ve found the wreckage of a British warship that was sunk by a German U-boat during World War I.

The SM UC-55 U-boat had been laying mines between Shetland and Orkney when it was forced to surface. A World War One German U-boat has been identified by divers off the coast of Shetland.

The U-boat skipper stared through his periscope through the murky September waters of the North Atlantic. He smiled at what ...

Shipwreck hunters in Scotland have located the wreck of a British warship that was sunk by a German U-boat in the North Sea nearly 110 years ago. They said the wreckage is that of HMS Hawke ...

Explorers say they’ve found the wreckage of a British warship that was sunk by a German U-boat during World War I. Some 524 people, including the ship’s captain, perished when the HMS Hawke ...

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