Imperial German U-Boat, U-24 During WW-I, on October 26, 1914 U-24 was the first submarine to attack an unarmed merchant ship without warning. It was the Admiral Ganteaume, which was torpedoed but was able to be towed back to port. In total U-24 sunk 33 merchant ships adding to 105,732tons, at the end of the war on November 22, 1918 the boat surrendered. Specifications, U-24, Mittel U class: The boat was laid down on February 5, 1912, at Germaniawerft, Kiel; launched, May 24, 1913; and commissioned, December 6, 1913 Displacement (srf/sub tons): 685/878             Dimensions (L*B*D meter): 64.70*6.32*3.56 Propulsion: 2*925hp diesel engines, 2*600hp electric motors for submergence, driving two shafts Speed (srf/sub knots): 16.5/9.5 Range (srf/sub n/miles@knots): 8,790@8/80@5 Diving depth (feet): 164 Complement: 35 officers and enlisted Torpedo: 2*bow torpedo tubes, 2*stern torpedo tubes, total of 6 torpedoes Mines: none Armament: 1*105mm main deck gun Construction Only 4 boats were built in this class, U-23 to U-26, by Germaniawerft, Kiel between 1911-14. Back to History Index     Image Country Year Description Eynhallow Is. (Scotland) 1982 Submarines Argonaut and U-24 (imperfotated)