german submarine german submarine type boat nazi_germany kriegsmarine operated world war ordered kriegsmarine november keel laid december launched february commissioned july short career sunk war patrol service kriegsmarine boat conducted training patrol war patrol damaged enemy vessel gross register tons grt patrols 6th boat flotilla sunk southwest ireland october crew survived went submarine construction ordered kriegsmarine november keel laid december yard launched february commissioned july year command design original german type submarines later designated displacement tonnes long tons surface tonnes long tons submerged boat total length pressure hull length beam height draught submarine powered man stroke cylinder diesel engines producing total metric horsepower shp use surfaced double acting electric motors producing total metric horsepower shp use submerged shafts propellers boat capable operating depths metres submarine maximum surface speed knots mph maximum submerged speed knots mph submerged boat operate nautical miles knots mph surfaced travel nautical miles knots mph fitted torpedo tubes fitted bow stern torpedoes naval gun rounds anti aircraft gun boat complement service history patrol following training exercises 6th flotilla july october moved active service 6th flotilla ready operations day training exercises ended left wilhelmshaven october day journey traveled north_sea british isles entered north_atlantic search allied convoys operation enemy ship damaged ton british steam freighter separated convoy sailing liverpool england north_america boat attack allied merchant vessel war patrol sunk october depth charges british destroyers attack took place southwest coast neutral ireland man crew killed depth charge attack crew members survived prisoners war british youngest crew member aboard born december dead years old 20th birthday months away captain oldest known crew member born april years old time boat sinking survived fifth boat lost world war fate war patrol sunk october depth charges british destroyers attack took place southwest coast neutral ireland man crew killed depth charge attack crew members survived prisoners war british youngest crew member aboard born december dead years old 20th birthday months away captain oldest known crew member born april years old time boat sinking survived fifth boat lost world war summary raiding history
German submarine U-42 (1939)