Soviet submarine S-80

	"Whiskey Twin Cylinder" submarine
History
Soviet Union
Name	S-80
Builder	Sormovo yard, Gorkiy
Laid down	13 March 1950
Launched	21 October 1950
Commissioned	2 December 1952
Fate	Sunk by accidental flooding, 27 January 1961, with loss of all 68 crewmen
General characteristics
Class & type	Whiskey-class attack submarine
Displacement	Surfaced: 1,050 tonnes (1,030 long tons); Submerged: 1,340 tonnes (1,320 long tons);
Length	76 m (249 ft 4 in)
Beam	6.3 m (20 ft 8 in) to 6.5 m (21 ft 4 in)
Draft	4.55 m (14 ft 11 in)
Propulsion	Two-shaft diesel-electric:; 2 × 4,000 bhp (3,000 kW) diesel engines; 2 × 2,700 hp (2,000 kW) main electric motors; 2 × 100 hp (75 kW) electric creep motors for silent running;
Speed	Surfaced: 18.25 knots (33.80 km/h); Submerged:13.1 knots (24.3 km/h);
Range	Surfaced: 8,580 nmi (15,890 km) at 10 knots (19 km/h; 12 mph); Submerged: 335 nmi (620 km) at 3 knots (5.6 km/h; 3.5 mph);
Endurance	Submerged: 166 h
Complement	52
Armament	6 × 533 mm (21 in) torpedo tubes (4 bow + 2 stern) for:; 12 × torpedoes or,; 22 × mines; 1 × single-mounted 25 mm (1.0 in) AA gun; 2 × single-mounted 57 mm (2.2 in) AA gun;

S-80 was a diesel-electric submarine of the Soviet Navy.

Its keel was laid down on 13 March 1950 at Krasnoye Sormovo as a Project 613 unit (NATO : Whiskey class). It was launched on 21 October, and delivered to Baku on the Caspian Sea on 1 November for tests, then transferred north via inland waterways in December. It was commissioned into the Northern Fleet on 2 December 1952, and operated there until mid-1957.

Beginning in July 1957, S-80 was overhauled at Severodvinsk and converted to Project 644 ("Whiskey Twin-Cylinder") guided missile submarine, by having launch tubes for two SS-N-3 Shaddock anti-ship missiles fitted externally. It returned to sea in April 1959.