Germany completed its first U-boat (the U-1) in 1905 and was the first nation to use a submarine during World War I. By comparison, the U.S. Navy commissioned its first sub (the U.S.S. Holland) in ...

The oldest U-boat you can visit is actually the first, as the U-1 wasn't used during WWI for combat operations. It hit another vessel in 1919 and was decommissioned, and now it resides in the ...

Germany's U-505 submarine was the 1st warship captured by the US Navy in over a century and top secret during World War II. See photos of the inside.

The U-853, which lies 121 feet deep and 8 miles east of Block Island, was one of many German U-boats that brought a mostly faraway war to the coastal United States. Advertisement ...

It's the German submarine U-576, resting on its side, right where it sank in 1942. Its wooden deck plates have rotted away after 74 years underwater.

The wreck of a WWI German U-boat sunk by the U.S. Navy in 1922 has been discovered off the East Coast of the United States, about 40 miles off Virginia and at a depth of about 400 feet.

Slow Roll for German U-boat . When operational, the U17 was powered by two 4-stroke MTU 600-horsepower diesel-electric engines, and had a cruising speed of 10 knots surfaced and 17 knots submerged.

A World War One German U-boat has been identified by divers off the coast of Shetland. The SM UC-55 submarine was sunk about eight miles south-east of Lerwick by the Royal Navy in 1917.

The German U-boat U-853 sank the last U.S. merchant ship sunk in WWII. Historian Tim Gray speculates that German U-boats may have entered Narragansett Bay before the U.S. officially entered WWII.