"4.18"^^ . "7.57e+08"^^ . . "9.35"^^ . "SM U-91 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-91 was engaged in the naval warfare and took part in the First Battle of the Atlantic."@en . "31.1136"^^ . "1915-06-23Z"^^ . . "1917-04-14Z"^^ . . "1917-09-17Z"^^ . "Surrendered 26 November 1918" . "65.8"^^ . "6.2"^^ . "1916-08-01Z"^^ . "U-91"@en . "9.98e+08"^^ .