Russian submarine Minoga

The Minoga (Минога - Lamprey) was a submarine built for the Imperial Russian Navy. She was built by Baltic Yard in St Petersburg and designed by I.G. 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. Served in the Baltic Fleet during World War I but transferred to the Caspian Sea Flotilla in 1918. Decommissioned and scrapped in 1922