. "6.18" . "U-993" . . . . . . . "67.1" . . "1942-11-16" . . "9.6" . "German submarine U-993" . . "1943-08-19" . "Sunk by British Air Raid on 4 October 1944" . "4.68" . . "32.5952" . "''U-993''" . . . . . . . "8.647E8" . . . . "1941-05-25" . . "1943-07-08" . "German submarine U-993" .