When the Bismarck was launched on May 18th, 1941 it was the largest battleship of the era and considered to be unsinkalble. Its mission was to stop the Allied convois in the North Atlanic. Nine days later after several battles during which it sank the "Hood", the largest ship of British navy, she was severly hit by British destroyers and sunk, carrying 2.106 German soldiers with it. 61 years the wreck rested at the bottom of the sea, 16.000 feet deep. In May 2002, director Cameron, supported by 150 strong team, traveled to the site of the sinking, 1.200 kilometers of the Britanny coast. Off the Russian ship "Keldysh" two deep-sea submarines equipped the latest technology and special lightwere generaters dived down and shot the first pictures the Bismarcks wreck. Eyewitnesses and survivors comment the underwater images. With his documentary Cameron also wanted to shed a light on the question whether the Bismarck sunk because of the British hits or due to - as some members of the crew claim - scuttling charges were used to rob the British of true victory.