EntityQ12804662· pop 5· linked from 331 articlesU-2521Sign in to save1944 Type XXI submarineConnectionsmetric horsepowerEntitymotor-generatorEntityOberleutnant zur SeeEntity2 cm Flak 30/38/FlakvierlingEntityWorld War IIConceptHamburgEntityNazi GermanyConceptgeographic coordinate systemEntityInternational Standard Book NumberEntitywattEntitytonneEntitytorpedoEntitydiesel engineEntityRoyal Air ForceEntityKriegsmarineEntityMAN SECompanynaval mineEntityU-boatEntityTyphoonEntityAdmiral HipperEntityCategories1944 shipsMaritime incidents in May 1945Ship infoboxes without an imageShips built in HamburgType XXI submarinesU-boats commissioned in 1944World War II submarines of Germany