Hitler's navy was built on the backs of submarines. These sea monsters attacked allied shipping till the very end. But near the beginning, Hitler decided to experiment. The Bismark was a behemoth of a warship on a scale no navy had seen before. And it was the allies worst nightmare. It had to be sunk. This is the story of the greatest hunt in naval history, of desperate fighting, of naval genius. It's the story of how the Giant Drowned .All Rights Reserved