Oscar class submarine

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The Soviet Union’s Project 949 (Granit) and Project 949A (Antey) submarines are known in the West by their NATO reporting names: the Oscar-I and Oscar-II classes respectively.

Oscars are the largest ballistic missile subs in service as of 2006, being slightly larger than Ohio-class submarines of the United States Navy, displacing less when surfaced but more when submerged, as they are shorter in length but broader in beam.

Two Oscar-I submarines were built at Severodvinsk and assigned to the Soviet Northern Fleet:

K-525 Arkhangelsk, laid down 1978, commissioned 1980
K-206 Murmansk (ex-Minsky Komsomolets), commissioned 1981, renamed Murmansk in 1993

Ten Oscar-II submarines were built at Severodvinsk. Six were assigned to the Soviet Northern Fleet:

Bow view

K-148 Krasnodar, commissioned 1986
K-119 Voronezh, commissioned 1988
K-410 Smolensk, commissioned 1990
K-266 Orel, formerly Severodvinsk, commissioned 1992
K-186 Omsk, launched May 8, 1993, commissioned October 27, 1993
K-141 Kursk, laid down 1992, launched 1994, commissioned December 1994, lost August 12, 2000

Four were assigned to the Soviet Pacific Fleet:

K-132 Belgorod, commissioned 1987
K-173 Chelyabinsk, commissioned 1989
K-150 Tomsk, commissioned 1991
K-456 Viluchinsk (ex-Kasatka), commissioned to the Northern Fleet in 1991; transferred to the Pacific Fleet September 1993

[edit] General characteristics

Oscar II class submarine K-186

Displacement when surfaced: 13,400 tons (Oscar-I), 14,700 tons maximum (Oscar-II)
Displacement when submerged: 20,540 tons (Oscar-I), 24,000 tons (Oscar-II)
Length: 144 meters (Oscar-I), 155 meters (Oscar-II)
Beam: 18.2 meters
Draft: 9 meters (Oscar-I) 9.2 meters (Oscar-II)
Max depth: Oscar-I - 400 meters regular, 450 critical. Oscar-II - 500 meters regular, 600 critical.
Compartments: 10
Complement: 48 officers, 68 men (Oscar-I) or 59 men (Oscar-II)
Reactor: Two OK-650b pressurised water reactors generating 190 MW each.
Propulsion: two shafts, each 49,000 hp
Speed (submerged): 30 knots (Oscar-I), 28 knots (Oscar-II)
Strategic armament: 24 Granit SS-N-19 missiles in two banks of 12 tubes mounted outside the pressure hull. Six large doors, hinged on the outside, cover the tubes in pairs on either side of the sail (British: fin).
Defensive armament: four 533-mm and two 650-mm bow torpedo tubes

Like other Soviet submarines, the Oscar not only has a bridge open to the elements on top of the sail but, for use in inclement weather, an enclosed bridge forward of this station in the sail.

A distinguishing mark is a slight bulge at the top of the fin. A large door on either side of the fin reaches this bulge. These are wider at the top than on the bottom, and are hinged on the bottom. It is reported in the Federation of American Scientists' web page [1] that this submarine carries an emergency crew escape capsule, and as there is no more likely visible feature, these doors apparently cover it.