Type UB III submarine
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The Type UB III submarine was a class of a U-boat built during World War I by the German Imperial Navy.
UB-86 washed ashore, 1921
German Type UB III submarine model 1
German Type UB III submarine model 3
SM UB-91
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SM UB-91 was a German Type UB III submarine or U-boat in the German Imperial Navy during World War I. She was commissioned into the German Imperial Navy on 11 April 1918 as SM UB-91.
UB-148 at sea, a U-boat similar to UB-91.
Deck gun in Chepstow today