EntityQ3427417· pop 13· linked from 41 articlesSM UB-8Sign in to saveGerman Type UB I-class submarineConnectionsImperial German NavyEntityBulgariaCountryGermanEntityIstanbulCityWorld War IConceptBlack SeaEntityHamburgEntityBulgarianEntityCyrillic scriptEntityInternational Standard Book NumberEntityBremenEntityRussian EmpireCountryOxfordEntityAustria–HungaryEntityKielEntitysubmarineEntitySaint PaulEntityGerman EmpireEntityAnnapolisEntityVarnaEntityCategories1915 shipsGerman Type UB I submarinesShips built in KielShips built in PolaSubmarines of the Bulgarian NavyU-boats commissioned in 1915World War I submarines of BulgariaWorld War I submarines of Germany