. "Sunk 21 April 1918 by depth charges offMenorca() by British warship, 32 dead" . . . . "SM UB-71" . "UB-71" . . . . . "SM UB-71" . . . . "1917-07-12" . "24.4464" . . "1916-05-20" . . . . . "55.83" . . "5.8" . . . . "1917-11-23" . "6.47E8" . . . "''UB-71''" . "5.13E8" . . .