Soviet submarine K-171

History
Soviet Union --> Russia
Name	K-171
Builder	Sevmash, Severodvinsk
Launched	1976
Commissioned	1976
Decommissioned	2003
Fate	Broken up
General characteristics
Class & type	Delta-class submarine
Displacement	9000 m³ (8,900 t (8,759 long tons)) surfaced 10500m³ (13,700 long tons (13,920 t)) submerged
Length	139 m (456 ft 0 in)
Beam	12 m (39 ft 4 in)
Draft	9 m (29 ft 6 in)
Propulsion	2 × VM-4B PWRs generating 90 MW each 2 × steam turbines producing 52,000 hp (39 MW) each
Speed	12 knots (22 km/h; 14 mph) surfaced 25 knots (46 km/h; 29 mph) submerged
Endurance	80 days
Test depth	390 m (1,280 ft) designed 450 m (1,480 ft) maximum
Complement	120 officers and men
Armament	D-9 launch system with 12 R-29 Vysota SLBM 4 × 21 in (533 mm) torpedo tubes
Service record
Part of:	Soviet Pacific Fleet

K-171 was a Project 667B Murena (Delta I by NATO) nuclear ballistic missile submarine of the Soviet Navy. The submarine was launched and commissioned in 1976.^[1] The submarine transferred from the Soviet Northern Fleet later that year to the Pacific.^[2]

On December 28, 1978, while in the Pacific Ocean, K-171 had a reactor failure. Radiation exposure resulted in the deaths of three crew members on board.^[3]

Like most Soviet Delta I and Delta II-class submarines that were in service after the Cold War, the submarine was scrapped to comply with new treaties. It was decommissioned from the Russian Navy in 2003.^[4]