equipped to raise the sunken submarine. Operation "Depth" was carried out by a task force of the Northern Fleet consisting of groups of trawlers and a destroyer under the command of Captain First Rank S. Minchenko. The wreck was lifted from the ocean floor on 9 June 1969 and transported to Mys Teriberskiy, suspended under Karpaty in slings. There, it was lowered to the bottom of Zavalishin Harbor at a depth of on 12 July. On 24 July 1969, S-80 was raised to the surface. During August, a government commission began studying the wreck under the management of Hero of the Soviet Union Vice Admiral Grigory Shchedrin. The commission determined not only the immediate causes of the boat's loss, but also that two further errors had compounded the accident: the crew never attempted to shift propulsion to the electric motors, and they never performed an emergency ballast tank blow. References Bibliography External links Книга памяти - C-80 Whiskey-class submarines Ships built in the Soviet Union 1950 ships Cold War submarines of the Soviet Union Maritime incidents in 1961 Lost submarines of the Soviet Union Shipwrecks in the Barents Sea 1961 in the Soviet Union Maritime incidents in the Soviet Union Ships lost with all hands Ships built by Krasnoye Sormovo Factory No. 112