Fleet raised the Soviet Navy ensign over the first Soviet nuclear submarine, K-3 Leninskiy Komsomol. Following the 1958 voyage of USS Nautilus, the Leninskiy 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 reached the Pacific Fleet for the first time in history in September 1963. More than 25 Soviet submarines did the same in the following years. The Northern Fleet was awarded the Order of the Red Banner on 7 May 1965. Two Northern Fleet submarines made a journey "around the world" (actually only between the Kola Gulf and the base at Petropavlovsk-Kamchatskiy around South America) without surfacing in 1966. The Northern Fleet had almost 50% of the Soviet Navy's submarines by 1986. From 1968 to 30 November 2005, the was the main Atlantic operational force of the fleet. The Museum of the Air Forces of the Northern Fleet was opened on 20 August 1976, in the closed settlement of Safonovo, Murmansk Oblast. Aircraft carriers began entering service with the Fleet in the 1970s. The lead unit of the Kiev class of heavy aircraft-carrying cruisers, , became operational in 1977, and was commissioned in 1987. Large nuclear-powered missile-carrying cruisers, the and , also entered service from 1980. Fortification of the southern reaches of the Barents Sea during the 1980s marked a Soviet naval strategy shift to an emphasis on bastion defense. Russia has continued to employ that strategy. In 1982, the 175th independent Naval Infantry Brigade was formed at Tumannyy, in Murmansk Oblast. Russian Navy An analysis of the Northern Fleet produced by Chatham House in the UK notes that: "After the fall of the Soviet Union, the Kremlin paid little attention to the Arctic. During the 1990s, the Russian Arctic was at best considered a burden fraught with socio-economic problems. Little was done there until an ‘Arctic revival’ began in the 2000s, focused on reinvesting in a region that had previously been abandoned for more than 15 years". Units were disbanded in the 1990s including the 6th and 3rd Submarine divisions in addition to aviation units. Previous units also included the 1st Submarine Flotilla, and the 7th Submarine Division of nuclear attack submarines. In 1989 the