UB-II class submersibles
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Descrição
UB-2 class (1915-18) German Empire – 30 submarines, UB-18 to UB-47 UB-45 underway in 1916 The UB-II class. Second part
The Golden Age of Submarines Goldwag's Journal on Civilization
RCSUBS
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UB-II class submersibles
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Type UB II submarine at Zeebrügge sometime in 1916
