World Largest Submarine

The worlds largest submarines are the Russian 941 Akula (designated 'Typhoon' by NATO) class. The launch of the first at the secret covered shipyard at Severodvinsk in the White Sea was announced by NATO on 23 Sep 1980. The vessels are believed to have a dived displacement of 26,500 tonnes (58.422 million lb), to measure 171.5 m (562 ft 7 in) overall and to be armed with 20 multiple warhead SS-N-20 missiles with a range of 8300 km (4500 nautical miles). It is thought less than five remain in service.  

Project 971 Щука-Б ( NATO reporting name"Akula"), is a nuclear-powered attack submarine (SSN) first deployed by the Soviet Navy in 1986. There are three sub-classes or flights of Shchuka, consisting of the original seven "Akula I" submarines which were built between 1982 and 1986, five "Improved Akula" submarines built between 1986 and 1991, and two "Akula II" submarines built from 1991. The distinction between the Improved Akula and the Akula II class is debated by authoritative sources.The Russians call all of the submarines Schuka-B, regardless of modifications.

Name:	Akula
Operators:	Soviet Navy  Russian Navy
Preceded by:	Operational precedessor: Victor class By sequence of construction: Sierra class
Succeeded by:	Graney class, Severodvinsk Class (in development)
In service:	1986
Planned:	20
Completed:	15
Cancelled:	5
Active:	9 (8 In Russia, 1 training for India)
Retired:	2
Preserved:	3

Type:	nuclear-powered attack submarine
Displacement:	5,700-8,140 tons surfaced 7,900-9,100 tons submerged 7,900-12,770 tons submerged (Akula-II)
Length:	108.0 - 111.7 m (sources vary)
Beam:	13.6 m
Draught:	9.7 m
Propulsion:	one 190 MW OK-650B/OK-650Mpressurized water nuclear reactor 1 OK-7 steam turbine 43,000 hp(32 MW) 2 OK-2 Turbogenerators producing 2,000 kW 1 seven-bladed propeller 2 retractable electric propulsors for low-speed maneuvering at 3 knots (6 km/h)
Speed:	11,6 knots (37 km/h) surfaced 33 knots (65 km/h) submerged
Endurance:	100 days
Test depth:	480 m operational depth 600 m test depth
Complement:	73
Crew:	73
Sensors and processing systems:	MGK-540 active/passive suite Flank arrays Pelamida towed array sonar MG-70 mine detection sonar
Electronic warfare and decoys:	Bukhta ESM/ECM *MG-74 Korund noise simulationdecoys (fired from external tubes) MT-70 Sonar intercept receiver Nikhrom-M IFF
Armament:	4x533mm torpedo tubes (plus 6 external 533mm tubes on Improved Akulas and Akula II's; 28 torpedoes) 4x650mm torpedo tubes (12 torpedoes) 1-3x SA-N-10 Igla-M Surface-to-air missile launcher fired from sail (surface use only)
Notes:	Chiblis Surface Search radar Medvyedista-945 Navigation system Molniya-M Satellite communications MGK-80 Underwater communications Tsunami, Kiparis, Anis, Sintez and Kora Communications antennas Paravan Towed VLF Antenna Vspletsk Combat direction system