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Sowjetrussischen Raketen U-boote typ G
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Golf class submarine
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Golf II class submarine 
Class overview 
Operators:  Soviet Navy 
Preceded by: Zulu V class 
Succeeded by: Hotel class 
In service: 1958–1990 
Completed: 23 
General characteristics 
Displacement: 2,794 tons surfaced/3,553 tons submerged (629)
2,300-2,820 tons surfaced/2,700-3,553 tons submerged (629A) 
Length: 98.4 m (629)
98.9 m (629A) 
Beam: 8.2 m 
Draught: 7.85 m (629)
8.5 m (629A) 
Propulsion: 3 × diesel engines, each 2,000 bhp (1,500 kW); 3 × electric motors, 5,200 shp (3,880 kW); 3 shafts. 
Speed: surface - 17kt, 9.500 nm/5kt; submerged - 12kt 
Range: 70 days endurance 
Test depth: 260 m (design)
300 m (maximum) 
Complement: 80 (629)
83 (629A) 
Armament: 3 × missile tubes
3 × Project 629 boats D-1 launch system with R-11FM missiles
Remaining boats D-2 launch system with R-13 missiles
1966 onwards 629A upgrade D-4 launch system with R-21 missiles
6 × 533 mm torpedo tubes 
Project 629, also known by the NATO reporting name of Golf class, were diesel electric ballistic missile submarines of the Soviet Navy. They were designed after six Zulu class submarines were successfully modified to carry and launch Scud missiles. All Golf boats had left Soviet service by 1990.

[edit] Class history
Design was started in the mid-1950s at the OKB-16 design bureau along with the D-2 missile system which it was to carry, and was based on the Foxtrot. The submarine was originally designed to carry three R-11 FM ballistic missiles with a range of around 150 km. These were carried in three silos fitted in the rear of the large sail behind the bridge. They could only be fired on the surface but the submarine could be underway at the time. Only the first three boats were equipped with these—the remaining ones were equipped with the longer range R-13 missiles.

The first boats were commissioned in 1958 and the last in 1962.

The boats were built at two shipyards — 16 in Severodvinsk and 7 in Komsomol na Amur. Fourteen were extensively modified in 1966–1972 and became known as 629A's by the Soviet Navy and Golf IIs by NATO (the original version now being designated Golf I). The major change was the upgrade of the missile system to carry R-21 missiles and increased speed. A few others had different conversions, for example one boat was converted to a minelayer (629E).

All boats had left Soviet service by 1990. In 1993, ten were sold to North Korea for scrapping. These boats have never been used operationally by North Korea, although their ballistic missile launch systems may have been studied by the North Korean military in order to improve other missile technology.

The plans were also sold to China which built a single modified example in 1966 which is apparently still in service.

Thnaks to Sonar :)