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.

Over eight decades ago, the US Navy made the historic capture of a Nazi U-boat during World War II. A treasure trove of vital German intelligence, the submarine's capture was top-secret. See inside ...

Submarine warfare played a pivotal role in the Battle of the Atlantic as German U-boats targeted merchant ships and troop carriers from the US and other Allied nations. The underwater predators ...

The wreckage was found by the Lost in Waters Deep group ... early indication of the Royal Navy’s vulnerability to German U-boats, even in the north of Scotland. The wreck, the last resting ...

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.