german type submarine boat imperial_german_navy german kaiserliche_marine world war sank ships career broken germany ordered october laid shipyard kiel november little metres length displaced tonnes long tons depending surfaced submerged carried torpedoes bow torpedo tubes armed deck mounted machine gun broken sections shipped rail antwerp launched commissioned march initially assigned flanders flotilla march sank british ships gross register tons grt command boat assigned october relegated training role september end war deemed unable surrender rest germany boat fleet remained germany broken germany design construction german_army rapid advance north_sea coast earliest stages world war imperial_german_navy found suitable submarines operated narrow shallow environment flanders project design effort begun mid august produced type design small submarine shipped rail port operations quickly assembled constrained railroad size limitations design called boat metres long displacing tonnes long tons torpedo tubes initial submarines numbered ordered october shy months planning class began laid kiel november built metres long metres draft metres single brake horsepower cylinder diesel engine surface travel single shaft horsepower electric motor underwater travel attached single propeller shaft speeds knots mph surfaced knots mph submerged moderate speeds sail nautical miles surface nautical miles submerged batteries like boats class rated diving depth metres completely seconds armed centimeter torpedoes bow torpedo tubes outfitted single millimeter machine gun deck standard complement consisted officer thirteen enlisted men work complete yard rail shipment process shipping boat involved breaking submarine essentially knock kit boat broken approximately pieces loaded railway early sections shipped antwerp assembly typically week process assembled launched march loaded barge taken canals underwent trials service career submarine commissioned german_imperial_navy march command year old time boat commander soon joined boats comprising flanders flotilla german des organized march joined flotilla germany midst submarine offensive begun february campaign enemy vessels german defined war zone german encompassed waters united_kingdom including english channel sunk vessels neutral countries attacked definitively identified enemy vessels operating false flag boats flanders flotilla initially limited patrols southern portion north_sea united_kingdom netherlands sortie flotilla april departed patrol soon april nautical miles north hinder scored success torpedoed sank british steamer ton steamer carrying general cargo london went loss crewmen sister boat pioneered route past british anti submarine nets mines late june boats flotilla began patrol western english channel soon followed patrols channel hampered fog bad weather boats sank ships successfully completing helped prove feasibility defeating british august patrolling area sank british fishing combined grt largest gross register tons grt sailing vessels traditionally rigged red sails stopped boarded crewmen sunk explosives ships sank war germany submarine offensive suspended september chief admiral response american demands sinking line steamer high profile august september directive ordered boats south western approaches required submarine activity north_sea conducted strictly prize regulations shortly cessation transferred german der october boats baltic flotilla based kiel danzig stationed time reported sources september transferred training duties according authors submarines assigned training duties war worn craft unfit service end war allies required german boats sailed surrender boats deemed allowed remain germany broken ships sunk damaged
SM UB-5