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.

Corvettes are the smallest ocean-going warships ... warfare – without assigning too much ship to a particular task. Notably, ...

Only one sailor could stand in the tiny kitchen at a time ... Operating under utmost secrecy, the US Navy painted the U-boat black and renamed it USS Nemo to hide its capture from the Germans.