"The place where the German U-boat sank the British battleship Royal Oak was none other than the middle of Scapa Flow, Britain's greatest naval base! It sounds

“A top-of-the-line examination of operations in north European waters during the first eight months of [WWII] . . . by far the best work on that subject.”�

On the night of 13/14 October 1939, the Type VIIB U-boat U-47, on its second war patrol, penetrated the main Royal Navy base at Scapa Flow and sank the British

At the outset of World War II, Scapa Flow was supposed to be the safe home base of the British Navy – nothing could penetrate the defences of this bastion. So