<Li> D - 19 launch system </Li> <Li> 20 × RSM - 52 SLBMs </Li> <P> The Project 941 or Akula, Russian "Акула" ("Shark") class submarine (NATO reporting name: Typhoon) is a type of nuclear - powered ballistic missile submarine deployed by the Soviet Navy in the 1980s . With a submerged displacement of 48,000 tonnes, the Typhoons are the largest submarines ever built, able to accommodate comfortable living facilities for the crew when submerged for months on end . The source of the NATO reporting name remains unclear, although it is often claimed to be related to the use of the word "typhoon" ("тайфун") by General Secretary Leonid Brezhnev of the Communist Party in a 1974 speech while describing a new type of nuclear ballistic missile submarine, as a reaction to the United States Navy's new Ohio - class submarine . </P> <P> The Russian Navy cancelled its Typhoon modernisation program in March 2012, stating that modernising one Typhoon would be as expensive as building two new Borei - class submarines . With the announcement that Russia has eliminated the last SS - N - 20 Sturgeon SLBMs in September 2012, the remaining Typhoons have reached the end of service . </P>

Who has the biggest submarine in the world
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