German submarine U-112

U-112 may refer to one of the following German submarines:


 * SMU U-112, a Type U 93 submarine launched in 1917 that served in the First World War and was surrendered in 1918; broken up at Upnor 1922
 * During the First World War, Germany also had this submarine with a similar name:
 * SMU UB-112, a Type UB III submarine launched in 1917 and was surrendered in 1918; dumped on beach at Falmouth after explosive trials 1921 and broken up in situ
 * GS U-112 (1939), would have been a Type XIB submarine, a large cruiser-type submarine capable of carrying an Arado Ar 231 aircraft; laid down in 1939, but cancelled after the outbreak of the Second World War

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