Soviet submarine K-27
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| History | |
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| Laid down: | 15 June 1958 |
| Launched: | 1 April 1962 |
| Commissioned: | 30 October 1963 |
| Homeport: | Gremikha |
| Fate: | The decommissioned submarine was scuttled in special training area in the Kara Sea near the northeastern coast of Novaya Zemlya on 6 September 1982 at 72°31′N 55°30′E / 72.517°N 55.500°ECoordinates: 72°31′N 55°30′E / 72.517°N 55.500°E |
| General characteristics | |
| Class and type: | November class submarine |
| Displacement: | 3,420 tons surface; 4,380 tons submerged |
| Length: | 109.8 m (360 ft 3 in) |
| Beam: | 8.3 m (27 ft 3 in) |
| Draft: | 5.8 m (19 ft 0 in) |
| Propulsion: | two VT-1 nuclear reactors with lead-bismuth liquid-metal coolants, capable of producing about 73 megawatts apiece |
| Speed: | 14.7 knots surface; 30.2 knots submerged |
| Range: | unlimited |
| Service record | |
| Part of: | Soviet Northern Fleet: 17th submarine division |
K-27 was the only submarine of Project 645 in the Soviet Navy. Project 645 was not assigned a NATO reporting name. That project produced one test model nuclear submarine, which incorporated a pair of experimental VT-1 nuclear reactors that used a liquid-metal coolant (Lead-bismuth eutectic), placed into the modified hull of a November class submarine (Project 627A).
The keel of K-27 was laid down on 15 June 1958 at Severodvinsk Shipyard No. 402. It was launched on 1 April 1962, and went into service as an experimental "attack submarine" on 30 October 1963.K-27 was officially commissioned into the Soviet Northern Fleet on 7 September 1965. K-27 was assigned to the 17th submarine division, headquartered at Gremikha).
The nuclear reactors of K-27 were troublesome from their first criticality, but the K-27 was able to engage in test operations for about five years. On 24 May 1968, the power output of one of its reactors suddenly dropped sharply; radioactive gases were released into its engine room; and the radiation levels throughout K-27 increased dangerously – by 1.5 grays per hour. This radiation consisted mostly of gamma rays and thermal neutrons, with some alpha radiation and beta radiation in addition – generated by the released radioactive gasses such as xenon and krypton in its reactor compartment.
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