 "U-413" did not suffer any casualties until 20 August 1944, when she was sunk, by one of the 115 strategically placed Naval Mines in the Cornish corridor 15 miles off the coast from Padstow.45 of her crew were killed; there was one survivor.The wreck of "U-413" was located and identified by marine archaeologist Innes McCartney in 2000 close to the official sinking position.