On February 9, 1944, the British submarine HMS Venturer made nautical history when it torpedoed and sank the German sub U-864 in the North Sea. It was the only time in the history of naval warfare that one submarine sank another while both were submerged. All 73 crewmen went down with the U-864.

Now the German sub has been rediscovered off Norway's west coast by that country's navy. The hull is broken in two but the vessel is otherwise intact.