The German U-boat was mighty, stealthy, and formidable, but there was one that met its downfall due to something so […] ...

U-505 was a near absolute failure as a killer, failing to sink a single ship for multiple combat tours. The U-boat couldn't ...

Eleven German submarines from the World War One period have been found in Belgian waters but this vessel is reported to be the best preserved of all. UB-II submarines were built in 1915 and 1916 ...

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.

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.