type submarine boat german_imperial_navy german kaiserliche_marine world war laid november second boat class german und sold germany class november submarine ordered second boats class outbreak world war august austro hungarian navy convinced submarines class delivered adriatic gibraltar consequence entire class including sold german_imperial_navy november german control class known type boats renumbered redesigned reconstructed german specifications launched commissioned august completed displaced tonnes long tons surfaced tonnes long tons submerged boat metres long armed torpedo tubes deck gun war sank ships combined gross register grt thirteen war patrols damaged ships grt november days armistice surrendered british broken design construction austro hungarian navy evaluated foreign submarine designs selected design known type new class submarines navy ordered boats february class seen improved version class design designed boats displace tonnes long tons surface tonnes long tons submerged doubled boats metres long overall beam metres draft metres austrian specifications called shafts twin diesel engines metric horsepower total surface running knots mph twin electric motors shp total maximum knots mph submerged boats designed torpedo tubes located bow stern boats armament include single centimetres deck gun sister boat laid november boats class begun construction slated complete months sister boats complete world war began august boats construction kiel austrians convinced impossible delivery boats need towed mediterranean past gibraltar british territory result sisters sold imperial_german_navy november renumbered germans class redesignated type imperial_german_navy submarines redesigned reconstructed german standards increased surface displacement tonnes long tons submerged tonnes long tons torpedo load increased deck gun upgraded gun originally specified service career launched august commissioned imperial_german_navy command october assigned remained duration war march replaced captain command successful sinking ships combined total gross register tons grt damaging tons successful month april sank ships tons span days succeeded commander von december command months war sank ships service career commanders completed thirteen war patrols surrendered british november days armistice broken ships sunk damaged
SM U-67