EntityQ15671018· pop 10· linked from 767 articlesU-421Sign in to save1942 Type VIIC submarineConnectionsType VII submarineEntitymotor-generatorEntityOberleutnant zur SeeEntityWorld War IIConceptMediterranean SeaEntityNazi GermanyConceptGdańskEntityInternational Standard Book NumberEntitysubmarineEntitykilometreEntitymileEntitytonneEntitytorpedoEntityknotEntitynautical mileEntitydiesel engineEntitypropellerEntityKriegsmarineEntitydraftEntityU-boatEntityCategories1942 shipsGerman Type VIIC submarinesMaritime incidents in April 1944Ship infoboxes without an imageShips built in DanzigU-boats commissioned in 1943U-boats sunk by US aircraftU-boats sunk in 1944World War II shipwrecks in the Mediterranean SeaWorld War II submarines of Germany