Home›1913 ships›SM U-21🌐EnglishEnglishDeutschEspañolFrançaisPolskiTürkçeالعربيةفارسی中文日本語EntityQ881059· pop 15· linked from 232 articlesSM U-21submarineWikidata factsImageU-Boote Kiel 1914.jpgSources (2)wikidata.orgde.wikipedia.orgvia Wikidata · CC0On the mapAvailable in 14 languagesEspañolFrançaisDeutsch中文日本語العربيةCzechFinnishNorwegianPolskiTürkçeConnectionsGdańskEntitygross register tonnageEntityCategories1913 shipsMaritime incidents in 1919Ships built in DanzigType U 19 submarinesU-boat accidentsU-boats commissioned in 1913U-boats sunk in 1919World War I shipwrecks in the North SeaWorld War I submarines of Germany