Sixty years after the loss of two of the greatest battleships ever launched, Channel 4 mounted an ambitious expedition to locate and film HMS Hood and Bismarck. Both were sunk several miles under the sea - too deep even for nuclear submarines to reach. In the first of two feature-length documentaries, extraordinary evidence is provided by the expedition into the mystery of Hood's sinking.
After the loss of HMS Hood . Britain is in a state of shock, its capital ship sunk by just one shell. Churchill has ordered every British warship or plane within striking distance to 'Sink the Bismarck!'. This second feature-length documentary reveals the expedition's findings about Hitler's dreaded battleship - the most powerful weapon of its day - and her historic first, and last, voyage.