page_title: Whiskey-class submarine
section_title: Missile variants
hierarchical_section_title: Whiskey-class submarine / Design / Missile variants
caption_attribution_description: English: Soviet submarine of the Whiskey Twin Cylinder class (project 644, modified from project 613). Русский: Советская подводная лодка проекта 644, перестроенная из проекта 613 (класс Whiskey).
context_page_description: Whiskey-class submarines are a class of diesel-electric attack submarines that the Soviet Union built in the early Cold War period.
context_section_description: In the 1950s and 1960s some Whiskey submarines were converted to guided missile submarines, with the capability to fire one to four SS-N-3 Shaddock cruise missiles. In 1956, the first prototype was ready. It was a regular Whiskey class modified with a launch tube aft of the sail containing a single SS-N-3c. This vessel was known in the West as Whiskey Single Cylinder. Between 1958 and 1960, six additional Whiskey-class submarines were converted to carry guided missiles. These boats had two missile tubes behind the sail, and were known in the west as the Whiskey Twin Cylinder, and Project 644 boats by the Soviets. 
  Between 1960 and 1963, six boats received an extended sail that could contain four Shaddock missiles. These were called Whiskey Long Bin in the West and Project 665 in the Soviet Union. All guided missile variants of the Whiskey class carried the P-5/ NATO SS-N-3c Shaddock land-attack missile, and had to surface in order to fire their missiles. The boats of the single and twin cylinder class also had to raise their missile tubes, which were normally positioned horizontally. 
  The "Long Bin" boats did not handle well, with the launch tubes causing stability problems, and water flow around the missile fittings was very noisy.  All were soon retired from service. Four were converted to Project 640 radar picket boats (called Whiskey Canvas Bag in the West). Two were converted for 'fishery research' and 'oceanographic research' purposes. In the Soviet Navy, the patrol variants of this class were replaced by the Romeo class. The guided missile variants were replaced by the Juliett class.
caption: Whiskey Twin Cylinder submarine
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