SM UB-8

SM UB-8 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was sold to Bulgaria in 1916 and renamed Podvodnik No. 18 (Bulgarian: Пoдвoдник №18), and was the first ever Bulgarian submarine.

SM UB-8

SM UB-8 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was sold to Bulgaria in 1916 and renamed Podvodnik No. 18 (Bulgarian: Пoдвoдник №18), and was the first ever Bulgarian submarine.