One of the world's largest private superyachts is the latest to set sail on an expedition to uncover the secrets of a British battle cruiser lost during World War II.
The use of Octopus — a 414 foot megayacht — was donated to the British Navy by Microsoft co-founder Paul Allen. Allen will fund the recovery and research expedition, sparing the British government any cost.
The HMS Hood was sunk during a battle in the North Atlantic with the German battleship Bismarck in 1941. The Hood remains the largest Royal Navy vessel to have gone down, and resulted in the largest loss of life suffered by any single warship in British history.