Q-ships were heavily armed decoy vessels used by the Royal Navy, made to appear like harmless merchant or fishing vessels. They were used to entice U-boats to ... a prize for sinking a submarine ...

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 ...

U-boats were used by Germany in both world wars, inflicting a heavy toll on merchant ships and military ... end after a loss of trim resulted in it sinking below its maximum dive depth, resulting ...