Project 971 has a double-hull design. The robust body is made of high quality alloy steel with σт = 1 GPa (10,000 kgf / cm2). To simplify the installation of equipment, the boat was designed using zonal blocks, which made it possible to transfer a significant amount of work from the cramped conditions of the sub's compartments directly to the workshop. After completion of the installation, the zonal unit is “rolled” into the hull of the boat and connected to the main cables and pipelines of the ship's systems.[6] A two-stage damping system is used: all mechanisms are placed on damped foundations, in addition, each zone unit is isolated from the body by rubber-cord pneumatic shock absorbers.[6] In addition to reducing the overall noise level of nuclear submarines, such a scheme can reduce the impact of underwater explosions on equipment and crew.[7][6] The boat has a developed vertical tail unit with a streamlined boule, in which the towed antenna is located. Also on the submarine are two reclining thrusters and retractable bow horizontal rudders with flaps. A feature of the project is the smoothly mated connection of the tail unit to the hull. This is done to reduce noise-generating hydrodynamic eddies.
Power supply is carried out by a nuclear power plant. The lead boat, K-284 Akula, is equipped with an OK-650M.01 pressurized water-cooled nuclear reactor. On later orders, the AEU has minor improvements. Some sources report that subsequent boats are equipped with OK-9VM reactors.[8] The thermal power of the reactor is 190 MW, the shaft power is 50,000 liters. with. Two auxiliary electric motors in the hinged outboard columns have a capacity of 410hp. with., there is one diesel generator ASDG-1000.
On 14 March 1991, he was included in the 45th Submarine Division of the Second Submarine Flotilla of the Pacific Fleet based in Krasheninnikov Bay.
On 24 September 1991, he arrived for permanent deployment in Krasheninnikov Bay.
From 8 September to 22 November 1992, he completed the tasks of the first combat service in the Sea of Okhotsk.
In December 1992, following the results of combat service, she won the prize of the Navy General Committee for the search and tracking of a foreign submarine and was declared the best in the Navy.
On 13 April 1993, he was renamed Narval.
From 21 June to 21 August 1993, he performed his second military service, off the coast of the United States in the Pacific Ocean.
On 8 October 1996, he entered the third military service. A malfunction occurred during service, thus the boat returned to his base in Krasheninnikov Bay.
From October to November 1997, he performed combat service with the crew of the K-295 Samara.
In 1998, he was transferred to the 10th Submarine Division of the 2nd Submarine Flotilla of the Pacific Fleet with the former base.
On 24 January 2001, by order of the commander of the Pacific Fleet, he was renamed Magadan.
On 3 October 2003, he represented the Russian Navy during a visit to the American military delegation.
From 2007 to 2008, the boat was repaired.
In July 2009, he took part in the Pacific Fleet's Naval Parade in the Amur Bay.
The K-331 Magadan was in Bolshoy Kamen on 27 June 2015.
As of 28 June 2015, it was located on the territory of the Zvezda Far Eastern Factory in Bolshoy Kamen, awaiting the next renovation.
As of 24 August 2017, the repair and modernization of the submarine is nearing completion.[10] On 11 August, it became known that the name Magadan will be given to the projected diesel-electric submarine of Project 636.3 Varshavyanka.[11]
On 10 October 2019, a decision was made instead of K-322, India plans to lease K-331 Magadan.[12] The transfer, after repair and modernization, to the lease of the Indian Navy was scheduled for 2022.
The Yankee class, Soviet designations Project 667A Navaga (navaga) and Project 667AU Nalim (burbot) for the basic Yankee-I, were a family of nuclear-powered ballistic missile submarines built in the Soviet Union for the Soviet Navy. In total, 34 units were built: 24 in Severodvinsk for the Northern Fleet and the remaining 10 in Komsomolsk-on-Amur for the Pacific Fleet. Two Northern Fleet units were later transferred to the Pacific.
The Typhoon class, Soviet designation Project 941 Akula, was a class of nuclear-powered ballistic missile submarines designed and built by the Soviet Union for the Soviet Navy. With a submerged displacement of 48000 tonnes, the Typhoons were the largest submarines ever built, able to accommodate comfortable living facilities for the crew of 160 when submerged for several months. 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.
The Akula class, Soviet designation Project 971 Shchuka-B is a series of fourth generation nuclear-powered attack submarines (SSNs) first deployed by the Soviet Navy in 1986. There are four sub-classes or flights of Shchuka-B, consisting of the original seven Project 971 boats, commissioned between 1984 and 1990; six Project 971Is, commissioned between 1991 and 2009; one Project 971U, commissioned in 1995; and one Project 971M, commissioned in 2001. The Russians call all of the submarines Shchuka-B, regardless of modifications.
The Foxtrot class was the NATO reporting name of a class of diesel-electric patrol submarines that were built in the Soviet Union. The Soviet designation of this class was Project 641. The Foxtrot class was designed to replace the earlier Zulu class, which suffered from structural weaknesses and harmonic vibration problems that limited its operational depth and submerged speed. The first Foxtrot keel was laid down in 1957 and commissioned in 1958 and the last was completed in 1983. A total of 58 were built for the Soviet Navy at the Sudomekh division of the Admiralty Shipyard, Saint Petersburg. Additional hulls were built for other countries.
The Delta III-class submarine, Soviet designation Project 667BDR Kaľmar (Squid), is a large ballistic missile submarine operated by the Russian Navy. Like other previous Delta-class submarines, the Delta III class is a double hulled design, with a thin low magnetic steel outer hull wrapped around a thicker inner pressure hull.
ТК-202 was a ballistic missile submarine of the Russian Navy, formerly having served in the Soviet Navy.
The Sierra class, Soviet designations Project 945 Barrakuda and Project 945A Kondor,, are a series of nuclear-powered attack submarines intended for the Soviet Navy and currently in service with the Russian Navy.
The K-150 Tomsk is an Oscar-class submarine in the Russian Navy.
The K-186 Omsk is an Oscar-class submarine in the Russian Navy.
The K-419 Kuzbass is an Akula-class submarine in the Russian Navy.
The K-328 Leopard is an Akula-class submarine in the Russian Navy.
The K-154 Tigr is an Akula-class submarine in the Russian Navy.
The K-263 Barnaul was an Akula-class submarine of the Russian Navy.
The K-317 Pantera is an Akula-class submarine in the Russian Navy.
The K-322 Kashalot was an Akula-class submarine in the Russian Navy.
The K-391 Bratsk is an Akula-class submarine in the Russian Navy.
The K-461 Volk (En:Wolf) is an Akula-class submarine of the Russian Navy.
The K-480 Ak Bars is an Akula-class submarine in the Russian Navy.
The K-295 Samara is an Akula-class submarine in the Russian Navy.
The K-335 Gepard is an Akula-class submarine in the Russian Navy.
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