EntityQ5634741· pop 9· linked from 75 articlesHMS UndineSign in to save1937 U-class submarineConnectionsLondonCityWorld War IIConceptgeographic coordinate systemEntityInternational Standard Book NumberEntitysubmarineEntityDundeeEntityHeligolandEntitysonarEntityOCLC, Inc.EntityminesweeperEntityFrench NavyEntitySoviet NavyEntityBarrow-in-FurnessEntityHarperCollinsEntitytorpedo tubeEntityRoyal Netherlands NavyEntityRoyal Norwegian NavyEntityHellenic NavyEntityRoyal Danish NavyEntitypennant numberEntityCategories1937 shipsBritish U-class submarinesLost submarines of the United KingdomMaritime incidents in January 1940Ships built in Barrow-in-FurnessSubmarines sunk by German warshipsWorld War II shipwrecks in the North SeaWorld War II submarines of the United Kingdom