Romeo-class submarine

Romeo-class submarine
Class overview
Builders	Krasnoye Sormovo Shipyard, Gorky Wuchang Shipyard (Wuhan) Guangzhou Shipyard (Canton) Jiangnan Shipyard (Shanghai) Bohai Shipyard (Huludao) Mayang-do Naval Shipyard (North Korea) - Assembly site of North Korean kits from China.
Operators	Soviet Navy (Historical)  People's Liberation Army Navy  Korean People's Navy  Bulgarian Navy (Historical)  Syrian Arab Navy (Historical)  Egyptian Navy  Algerian National Navy (historical)
Preceded by	Whiskey-class submarine
Succeeded by	Foxtrot-class submarine Type 035 submarine
Completed	133
Retired	75
Preserved	2
General characteristics
Displacement	1,475 tons surfaced 1,830 tons submerged
Length	76.6 m (251 ft 3 in)
Beam	6.7 m (22 ft)
Draught	5.2 m (17 ft 1 in)
Propulsion	Two diesels delivering 2.94 MW (4000 shp) with two electric motors driving two shafts.
Speed	15.2 knots (28.2 km/h) surfaced 13 knots (24 km/h) submerged
Range	14,484km (9,000 miles) at 9 knots (17 km/h)
Complement	54 men (10 officers)
Sensors and processing systems	sonar and radar
Electronic warfare & decoys	MRP 11-14
Armament	8 × 533 mm (21 in) torpedo tubes. Six located in the bow and two in the stern. 14 × 533 mm (21 in) anti-ship or anti-submarine torpedoes (including Yu-4 and Yu-1 torpedoes) or 28 mines

The Project 633 class (known in the West by its NATO reporting name as the Romeo class) is a class of Soviet diesel-electric submarine, built between 1957 and 1961. A Chinese variant, Type 033, was built in China from 1962 to 1984.