. "SM UB-56" . "''UB-56''" . . "24.8168" . "1917-07-19" . "5.16E8" . "1916-09-05" . . "1916-05-20" . . "SM UB-56" . "6.46E8" . . . . "Sunk 19 December 1917 atby a mine, 37 dead" . "UB-56" . . . . . . . "1917-06-06" . . . . "55.85" . . . . . "5.8" . . .