german submarine german submarine type boat nazi_germany kriegsmarine served world war constructed earliest days boat arm kiel served pre war navy baltic_sea north_sea took command october continued role boat lost war undertook patrols sunk torpedo fired hms salmon lost hands construction design construction ordered kriegsmarine march violation treaty versailles keel laid shipyard bremen yard number march months construction launched november commissioned december command design like type submarines displaced tonnes long tons surfaced long tons submerged overall length pressure hull propulsion consisted man cylinder stroke diesel engines totaled maximum rpm submarine equipped electric motors totaled shp maximum rpm engines gave total speed knots mph surfaced knots mph submerged resulted range nmi traveling knots mph surface nmi knots mph submerged boat test depth deep having hull crushed armament consisted torpedo tubes located bow stern torpedoes board mines equipped naval gun rounds board anti aircraft defenses consisted anti aircraft gun service history patrol sea war broke having set wilhelmshaven august arrived kiel september following day departed war patrol patrolled north_sea weeks hoping catch ships traveling britain scandinavia carrying war supplies patrol boat sank british neutral sweden carrying british produce british submarine later fired subsequently claimed sunk fact torpedo missed september crew captured swedish vessel algeria proceeded escort germany patrol came end returned berth kiel end september remained december patrol credited having laid sank norwegian freighter second patrol november issued orders scout location secret german naval base raids allied shipping located provided soviet_union mission required coded messages soviet naval vessels patrolling area preceding soviet escort prospective base location left december days wilhelmshaven spotted surface near norwegian port british submarine salmon salmon fired torpedo counterpart sank sailors aboard lost patrol salmon torpedoed light cruisers leipzig following loss continued successfully reaching location accomplished scouting mission summary raiding history
German submarine U-36 (1936)