Soviet submarine S-80
2 x PG -101 electric motors 1,350 hp 2 x PG -103 electric motors 50 hp
- 4 × torpedo tubes (bow) ∅ 53.3 cm
- 2 × launch tubes for P-5 missiles
The S-80 was a conventionally powered submarine of the project 644, a variant of 613 "Whiskey class" of the Soviet Navy project.
The keel-laying ceremony took place on 13 March 1950 to 112 yard " Krasnoje Sormowo " in Gorky as a boat of class Project 613 (NATO reporting name: Whiskey class) instead. On the water it was left on 21 October 1950 and delivered on 1 November to Baku on the Caspian Sea. After a test drive in the Caspian Sea, it was transferred on 2 December 1952, the domestic waterway of the Russian Northern Fleet and remained there until mid-1957 in service.
As of July 1957, the S-80 on the Type Project 644 ( NATO designation: Whiskey - class, twin cylinder ) was overhauled in Severodvinsk and converted as diesel attack submarine of the Soviet Navy. From April 1959 the boat was reinstated.
On the night of January 26, 1961 came in the snorkel trip in the Barents Sea water in the diesel engines. There was a sea of magnitude 6 at a water temperature of -5 ° C. At 1:27 clock on 27 January 1961, the boat sank under snorkel depth, an automatic closure of the snorkel to prevent further penetration of water into the snorkel system should trigger. The de-icing system for the locking mechanism, however, was shut down and the snorkel tube iced.
The diesel engine placed at the intrusion of seawater into the air supply immediately. The machinist in the fifth boat section, discovered the flooding, but closed the air valve of diesel due to the complicated tubular guide is not fast enough. When he had identified the right hand wheel, the valve stem was already bent by the mass of the penetrating water. With the intrusion of water into the boot section the boat was uncontrollable.
When the boat had reached an angle of incidence of 45 °, the ride slowed to a stop first, then the boat sank over the stern up to the seabed at a depth of 195 m. The second, third and fourth boot section collapsed, initially survived another 24 crew members in the rear boot section. Their attempt to leave the sunken boat with the help of the IDA -51 device, but failed and therefore survived, none of the 68 crew members of the disaster, their fate remained unknown for the next 7.5 years.
Salvage of the U- boat wreck
The wreck was June 23, 1968 from the Altai of the Soviet Navy salvage vessel in position 70 ° 1 ' 23 " N, 36 ° 35' 22" O70.02305555555636.589444444444Koordinaten: 70 ° 1 ' 23 " N, 36 ° 35' 22" O found at a depth of 196 m and identified with their bathyscaphe as S-80. After considering the report of a government commission ordered the recovery of the U- boat wreck in the operation depth. The shipyard Nikolayevsk SSZ built the special salvage ship Carpathia with equipment for the salvage of the submarine.
The operation depth was carried out by a task force of the Soviet Northern Fleet, consisting of several tugboats and a destroyer under the command of Captain S. Minchenko. The wreck was lifted on 9 June 1969 and brought in mounted under the Carpathia loops by Mys Teriberskiy. There, the wreck was filed on July 12 at a depth of 51 m on the floor of the port of Zavalishin.
On July 24, 1969, the S-80 was lifted to the surface. During the month of August, a government commission examined, with Vice Admiral GI Shedrin the wreck. They found not only the immediate cause of the sinking, but also identified two other errors that had contributed to the accident. First, the team had never tried the drive transfer from diesel to drive the electric drive and the other was not the attempt has been made to blow out an emergency ballast tank.