SM U-23 (Germany)
Introduction '''SM ''U-23''''' was one of the 329 U-boats serving in the Imperial German Navy in World War I. ''U-23'' was engaged in the naval warfare and took part in the First Battle of the Atlantic. ''U-23'' served on three war patrols, sinking a total of seven ships for . She was baited by the Q ship ''Princess Louise'' and torpedoed by  at , off Fair Isle, in Shetland, Scotland. Twenty four men died and 10 survived.
Summary of raiding history DateNameNationalityTonnageFate13 March 1915''Invergyle''1,794Sunk15 March 1915''Fingal''1,562Sunk15 May 1915''Martha''1,182Sunk19 May 1915''Chrysolite''222Sunk19 May 1915''Crimond''173Sunk19 May 1915''Lucerne''154Sunk22 May 1915''Minerva''3,735Sunk
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