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

"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

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

The Royal Oak was one of the mightiest battleships of the British Navy although, prior to the start of the Second World War, it had been scheduled for retiremen