HMS Hood, a 42100-ton battlecruiser built at Clydebank, Scotland, was completed in March 1920. For more than two decades, she was the Worlds largest .\rbr\rbrHMS Hood, a 42100-ton battlecruiser built at Clydebank, Scotland, was completed in March 1920. For more than two decades, she was the Worlds largest .\rbr\rbrWW2 The Mighty HMS Hood Full Documentary Both HMS Hood and Bismarck are sunk several miles under the sea - too deep even for nuclear submarines to .\rbr\rbrHMS Hood, a 42100-ton battlecruiser built at Clydebank, Scotland, was completed in March 1920. For more than two decades, she was the Worlds largest .