EntityQ602503· pop 17· linked from 784 articlesU-31Sign in to save1936 Type VIIA submarineConnectionsgross register tonnageEntityType VII submarineEntitymotor-generatorEntityNorwayCountryUnited KingdomCountryDenmarkConceptSwedenCountryEstoniaCountryWorld War IIConceptFaroe IslandsEntityBaltic SeaEntityNazi GermanyConceptInternational Standard Book NumberEntityBremenEntitysubmarineEntitykilometreEntityEnglish ChannelEntitymileEntitytonneEntityKarl DönitzEntityCategories1936 shipsGerman Type VIIA submarinesMaritime incidents in March 1940Maritime incidents in November 1940Military units and formations of Nazi Germany in the Spanish Civil WarShips built in Bremen (state)U-boats commissioned in 1936U-boats sunk by British aircraftU-boats sunk by British warshipsU-boats sunk by depth chargesU-boats sunk in 1940