Northern Fleet Project 42 and 50 ASW vessels). On 1 April 1961, the division was renamed the 2nd Anti-Submarine Warfare Division. On 1 July 1958, the Northern Fleet raised the Soviet Navy ensign over the first Soviet nuclear submarine, K-3 Leninsky Komsomol. Following the 1958 voyage of USS "Nautilus", the "Leninsky Komsomol" (named for Vladimir Lenin’s Komsomol) traveled under the Arctic ice and surfaced at the North Pole on 17 July 1962. Russian submarines have visited the North Pole region more than 300 times since then. Two nuclear submarines of the Northern Fleet made a journey under the Arctic ice cap and
Sail (submarine) as an observation platform. It also provides an entrance and exit point on the submarine that has enough freeboard to prevent the submarine being swamped. Underwater the sail acts as a vertical stabilizer. In some submarines, the sail also supports diving planes, which are control surfaces used for underwater stability and steering. Sail (submarine) In naval parlance, the sail (American usage) or fin (European/Commonwealth usage) of a submarine is the tower-like structure found on the dorsal (topside) surface of submarines. Submarine sails once housed the conning tower (command and communications data center), the periscope(s), radar and communications masts (antenna), though