Typhoon Class Submarine, Russian ballistic missile submarine

The Project 941 or Akula, Russian "Акула" ("Shark") class submarine (NATO name: Typhoon) is a type of nuclear-powered ballistic missile submarine deployed by the Soviet Navy in the 1980s. With a maximum displacement of 33,800 tons, the Typhoons are the largest class of submarine ever built, large enough to accommodate decent living facilities for the crew when submerged for months on end. 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 Leonid Brezhnev in a 1974 speech while describing a new type of nuclear ballistic missile submarine. Soviet doctrine for these vessels was to have them launch SLBMs while submerged under the arctic ice, avoiding the traversal of the GIUK gap to remain safe from the enemy attack submarines and anti-submarine forces. Technically Typhoons were also able to successfully deploy their long-range nuclear missiles while moored at their docks.

Typhoon submarines are among the quietest Russian sea vessels in operation, being quieter and yet more maneuverable than their predecessors. Besides their missile armament, the Typhoon class features six torpedo tubes; four are designed to handle RPK-2 (SS-N-15) missiles or Type 53 torpedoes, and the other two are designed to launch RPK-7 (SS-N-16) missiles, Type 65 torpedoes, or mines. A Typhoon class submarine can stay submerged for periods up to 180 days in normal conditions, and potentially more if deemed necessary (e.g., in the case of a nuclear war). Their primary weapons system is composed of 20 R-39 (NATO: SS-N-20) ballistic missiles (SLBM) with a maximum of 10 MIRV nuclear warheads each.

Typhoon class submarines feature multiple pressure hulls that simplify internal design while making the vessel much wider than a normal submarine. In the main body of the sub, two Delta class pressure hulls lie parallel with a third, smaller pressure hull above them (which protrudes just below the sail), and two other pressure hulls for torpedoes and steering gear. This also greatly increases their survivability - even if one pressure hull is breached, the crew members in the other are safe and there is less potential for flooding.

Variants

Typhoon-based cargo vessel

The Submarine Cargo Vessel is a proposed idea by the Rubin Design Bureau where a Typhoon has its missile launchers removed and replaced with cargo holds. The projected cargo capacity of this configuration is 15,000 tonnes (15,000 long tons).

Typhoon class submarine Units

#	Laid down	Launched	Commissioned	Status
TK-208 Dmitriy Donskoy	June 30, 1976	September 27, 1980	December 29, 1981	In service. Upgraded to project 941UM for use of Bulava missiles
TK-202	April 22, 1978	September 23, 1982	December 28, 1983	Withdrawn from active service in June 1999, scrapped 2003-2005
TK-12,Simbirsk	April 19, 1980	December 17, 1983	December 26, 1984	Withdrawn from active service in 1996, scrapped 2006-2008
TK-13	February 23, 1982	April 30, 1985	December 26, 1985	Withdrawn from active service in 1997, scrapped 2007-2009
TK-17 Arkhangelsk	August 9, 1983	December 12, 1986	December 15, 1987	In reserve from 2006, main armament inactive.
TK-20 Severstal	August 27, 1985	April 11, 1988	December 19, 1989	In reserve from 2004, main armament inactive.
TK-210	1986	1990 (scrapped on the ways)

834 TK 208 Dmitriy Donskoy

Typhoon-#1

• 9 February 1982: Entered 18th division (Zapadnaya Litsa), NOR.
• December 1982: Transferred from Severodvinsk to Zapadnaya Litsa.
• 1983-1984: Tests of D-19 missile complex. Commanders: A.V.Olkhovikov (1980–1984).
• 3 December 1986: Entered Navy Board of the Winners of the Socialist Competition.
• 18 January 1987: Entered MoD Board of Glory.
• 20 September 1989–1991: Repairs and refit at Sevmash to Project 941U. 1991 refit cancelled.
• 1996: Returned to 941U refit.
• 2002: Named Dmitriy Donskoy.
• 26 June 2002: End of refit.
• 30 June 2002: Start of testing.
• 26 July 2002: Entered sea trials, Re-entered fleet, without missile system.
• December 2003: Sea trials; refitted to carry a new Bulava missile system. New missile system expected to be operational by 2005.
• 9 October 2005: Successfully launched SS-NX-30 Bulava SLBM from surface.
• 21 December 2005: Successfully launched SS-NX-30 Bulava SLBM from submerged position on move.
• 7 September 2006: Test launch of the Bulava missile failed after several minutes in flight due to the problems in the flight control system. The missile fell into the sea about a minute after the launch. The sub was not affected and was returning to Severodvinsk base submerged. Later reports blamed the engine of the first stage for the failure.
• 25 October 2006: Test launch of the Bulava-M missile in the White Sea failed some 200 seconds after liftoff due to the apparent failure of the flight control system.
• 28 August 2008: Undergone successful testing at the Sevmash shipyard in Severodvinsk, Arkhangelsk Oblast. More than 170 men are currently working with the Dmitriy Donskoy, hundred of them employees at the Sevmash plant and 70 from other involved companies.

830 TK 17 Arkhangelsk

Typhoon-#5

• 19 February 1988: Entered 18th division (Zapadnaya Litsa) NOR.
• 8 January–9 November 2002: Refit at Sevmash.
• In July 2002, crew petitioned Main Navy Headquarters to adopt the name Arkhangel'sk (renamed on 18 November 2002).
• Commander: 2002-2003 V.Volkov.
• 17 February 2004: Took part in military exercises with President Vladimir Putin aboard.
• Could be modified to carry cruise missiles or to lay mines, or could be used in special operations.

TK 20 Severstal

Typhoon-#6

• 28 February 1990: Entered 18th division (Zapadnaya Litsa), NOR.
• 25 August 1996: Successfully launched SLBM
• November 1996: Successfully launched SLBM from North Pole.
• 24 July 1999: Took part in parade on Navy Day in Severomorsk, NOR.
• November–December 1999 - distant cruise.
• 2001: named to Severstal.
• June 2001–December 2002: Repairs at Sevmash.
• Commander: A.Bogachev (2001).

Class overview
Name:	Akula (Акула) (NATO: Typhoon)
Builders:	Rubin Design Bureau
Operators:	Soviet Navy Russian Navy
Preceded by:	Delta class submarine
Succeeded by:	Borei class submarine
In commission:	December 12, 1981
Completed:	6
Active:	1
Scrapped:	3
Preserved:	2
General characteristics
Type:	Ballistic missile submarine
Displacement:	23,200–24,500 t (22,830–24,110 long tons) surfaced 33,800–48,000 t (33,270–47,240 long tons) submerged
Length:	175 m (574 ft 2 in)
Beam:	23 m (75 ft 6 in)
Draught:	12 m (39 ft 4 in)
Propulsion:	2 × OK-650 pressurized-water nuclear reactors, 190 MW (254,800 hp) each 2 × VV-type steam turbines, 37 MW (49,600 hp) each 2 shafts 7 bladed shrouded screws
Speed:	22.22 knots (41.15 km/h; 25.57 mph) surfaced 27 knots (50 km/h; 31 mph) submerged
Endurance:	180 days submerged
Test depth:	400 m (1,300 ft)
Complement:	163
Armament:	1 × 9K38 Igla SAM 2 × 650 mm (26 in) torpedo tubes • RPK-7 Vodopad AShMs • Type 65K torpedoes 4 × 533 mm (21 in) torpedo tubes • RPK-2 Viyuga cruise missiles • Type 53 torpedoes[1] D-19 launch system • 20 × RSM-52 SLBMs
Notes:	Ships in class include: TK-208 TK-202 TK-12 TK-13 TK-17 TK-20 TK-210