Russia is preparing to put to sea a revolutionary underwater weapon—a long-range, high-speed, nuclear-powered, unmanned underwater vehicle (UUV) with a thermonuclear warhead. The weapon is intended primarily for use against ports and coastal cities, with some Russian reports claiming a secondary role of attacking U.S. aircraft carriers.
Originally known as the “Status-6 Oceanic Multipurpose System,” the drone was named “Poseidon” by President Vladimir Putin in 2018 after a “naming contest” for new Russian weapons. As early as September 2015, U.S. Department of Defense officials reported the development of the underwater drone carrying a nuclear warhead to attack coastal cities. It was given the NATO reporting name “Kanyon.”