Portsmouth on 7 November 1940 with 40 crew on board to relieve which was on patrol off the Western Approaches near Brest, France. At the time it was thought that she had been sunk by a German destroyer. However she was discovered by a local diver in 1983, split into two just forward of the gun by a mine. The wreck lies in about 46 metres of water roughly 12 miles south of St. Catherine's Point, Isle of Wight in position . It is likely that she struck the mine shortly after sailing whilst carrying out a trim dive. The wreck site is designated as a protected place under the Protection of Military Remains Act 1986. References Citations Sources World War II shipwrecks in the English Channel British S-class submarines (1931) Maritime incidents in November 1940 Lost submarines of the United Kingdom 1931 ships World War II submarines of the United Kingdom Ships sunk by mines Ships lost with all hands