The Russian Navy cancelled its Typhoon modernization program in March 2012, stating that modernizing one Typhoon would be as expensive as building two new Borei-class submarines. 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.

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 of 160 when submerged for months on end. The Typhoon class, Soviet designation Project 941 Akula ( Russian: Акула, meaning ' shark', NATO reporting name Typhoon), is a class of nuclear-powered ballistic missile submarines designed and built by the Soviet Union for the Soviet Navy. 2 × geared steam turbines, 50,000 SHP each.2 × OK-650 pressurized-water nuclear reactors, 190 MWt each, HEU

Typhoon class submarine syria