Russian submarine Minoga

Minoga (Минога - Lamprey) was a submarine built for the Imperial Russian Navy. She was built by Baltic Yard in Saint Petersburg and designed by Ivan Bubnov. She was a single hulled boat with a 16 fathom (30 metres) diving depth. While an advance on previous boats, the single shaft design was not very maneuverable and the diesel engines were not reliable. The boat served in the Baltic Fleet during World War I but was transferred to the Caspian Sea Flotilla in 1918. She was decommissioned and scrapped in 1922