. . . . "German submarine U-683" . . "1944-03-07" . . . . . . . "67.1" . . "32.7804" . . "4.7" . . "German submarine U-683" . . "8.71E8" . . . . "Missing in the North Atlantic since 20 February 1945" . . . . "''U-683''" . "6.2" . "9.6" . "1942-12-23" . . . . . . . "7.69E8" . . . "1944-05-30" . "1941-08-25" .