german submarine german submarine type boat nazi_germany kriegsmarine served world war ordered april violation treaty versailles prevented construction commissioning boats german navy german naval program known sank liner ship sunk world war september command retired line service september undertaking war patrols having sunk vessels damaging served training role end war scuttled later raised broken scrap construction ordered kriegsmarine april violation treaty versailles keel laid january bremen yard number launched august formally commissioned kriegsmarine october command design like type submarines man cylinder stroke diesel engines totalling electric motors produced shp allowed travel maximum knots mph surfaced knots mph submerged range nmi knots mph surface nmi knots mph submerged torpedo tubes bow stern carry total torpedoes mines mines centimetres deck gun rounds equipped anti aircraft gun commissioned deployed stationed german port city wilhelmshaven service history career involved war patrols sank merchant ships totalling gross register tons grt auxiliary warship grt damaged ship grt damaged british battleship hms attacks took place command patrol sinking went sea august world war began active service career began september days leaving wilhelmshaven hours great_britain declared war germany sank ton passenger ship nmi west route liverpool montreal canada ship sunk world war passengers including neutral americans died sinking went sink vessels following attack checked incoming reports london german naval high command having told kriegsmarine single boat vicinity day sinking promptly denied allegations german boat sunk claimed instead british torpedoed vessel attempt bring united_states war allies order calm american response sinking german foreign minister arranged meeting grand admiral american naval september meeting assured received reports german submarine sea result definitely established sunk german boat asked inform american government submarine returned port boats maintained radio silence sea docked september admiral met boat later said looked unhappy told admiral fact responsible sinking mistaken armed merchant cruiser claimed subsequently received orders affair kept total secret navy court martial considered actions good faith political explanations sinking handled deny allegations german boat sunk vessel order sinking secret log altered order evidence trials truth fate liner brought forth publicly germans second patrol result investigation undertaken german general staff following sinking remained port december finally allowed sea second war patrol lasted days time travelled southern coast neutral norway returning wilhelmshaven december voyage encounter enemy vessels consequently returned port claims patrol patrol successful having left wilhelmshaven december north_sea british isles travelled southern coast ireland near west coast scotland sank enemy vessel patrol ton anti submarine hms december day hit bigger target british battleship hms following sinking fired torpedo battleship damaged killing crew members victims sunk mines laid boat sunk january damaged january sunk january returned home port wilhelmshaven january fourth patrol fourth patrol undertook began march left wilhelmshaven west coast norway preparation invasion country period days traveled northeast norwegian coast search allied convoys find returned wilhelmshaven march fifth patrol like fourth patrol fifth patrol ended losses sea april support german invasion norway denmark operation days travelled west coast norway headed southwest scotland order intercept british warships heading north defend norway failed encounter vessels returned wilhelmshaven arriving sixth patrol sixth patrol time sunk enemy ships patrol having left wilhelmshaven june entered north_sea attempt sink allied ships area days british isles sank enemy ships vessel attacked ton british sunk june days later ton norwegian vessel sunk june british ship torpedoed followed july egyptian july following attacks headed port instead returning wilhelmshaven france captured fall country german boat enter port later patrols retirement began patrol operating seventh overall july period days traveled far south portugal sank ton british ship 21st days later july returned having experienced malfunction engines clear boat suffering number mechanical difficulties result decided need patrol decided leave return germany eighth war patrol undertake began august left north_atlantic days travelled north british isles north_sea entered german port city kiel august time sank swedish vessel august british steam clan august attacks took place west coast neutral ireland successes experienced engine trouble forced end patrol early returning germany arrived received word awarded knight boat previous war patrols following eighth patrol retired line service september assigned training baltic rest war retirement experienced crew members including transferred months war range boat gunnery platform scuttled crew order avoid surrendering boat allies wreck boat later raised broken took june summary raiding history service kriegsmarine sank commercial ships loss grt warship loss grt damaged commercial ship grt damaged battleship hms
German submarine U-30 (1936)