🌐EnglishEnglishBahasa IndonesiaDeutschFrançaisNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийالعربيةفارسی中文日本語EntityQ689670· pop 14· linked from 158 articlesU-23Also known as German submarine U-231936 Type IIB submarineOn the mapAvailable in 14 languagesFrançaisDeutsch中文РусскийPortuguêsالعربيةNederlandsPolskiSerbianSlovenianConnectionsType II submarineEntitygross register tonnageEntityCategories1936 shipsGerman Type II submarinesMaritime incidents in September 1944Ships built by Damen Shipyards GalațiShips built in KielShipwrecks of TurkeyU-boats commissioned in 1936U-boats scuttled in 1944World War II shipwrecks in the Black SeaWorld War II submarines of Germany