🌐EnglishEnglishFrançaisPolskiالعربيةفارسی中文EntityQ7391625· pop 6· linked from 61 articlesSM UB-171915 Type UB I submarineConnectionsgross register tonnageEntityImperial German NavyEntityCategoriesGerman Type UB I submarinesMissing U-boats of World War IShip infoboxes without an imageShips built in BelgiumShips built in Bremen (state)U-boats commissioned in 1915U-boats sunk in 1918World War I submarines of Germany