After more than 80 years hidden beneath the waves off Rio de Janeiro, the location of a Brazilian troop transport ship ...

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 ...

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 ...

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.

Its primary objective in the Atlantic: to spot and report German U-boats, which were wreaking havoc on Allied ships. In May alone, the Nazi submarine fleet sank 115 ships in the western Atlantic.

Feb. 3 is the 82nd anniversary of the sinking of the USAT Dorchester in the north Atlantic Ocean by a German U-boat.