FORCETALLY
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At a glance
Measured figures
maximum
Single source155 m (508 ft 6 in) maximum[source]
Sierra I
Single sourceConfiguration
| Specification | Oscar-class submarine | Sierra-class submarine |
|---|---|---|
| Complement | 94/107[source] | Sierra I & II: 61 & 72[source] |
| Range | — | Effectively unlimited, except by food supplies[source] |
| Power | 2 × pressurized water cooled reactors, HEU ≤ 45%[source] 2 × steam turbines delivering 73,070 kW (97,990 shp) to two shafts[source] | Sierra I & II: 1 × PWR , 190 MW ( HEU <= 45% ) 2 × 1,002 hp (747 kW) emergency motors 1 shaft, 2 spinners[source] |
| Name | Oscar II class[source] |
Sierra II
Single sourceSierra I : 107.16 m (351.6 ft) Sierra II : 110 m (360 ft)[source]
Submerged · source measurement 3
Single sourceSubmerged · source measurement 4
Single sourceSurfaced · source measurement 1
Single sourceSurfaced · source measurement 2
Single source12,500/14,700 tonnes surfaced 16,500/19,400 tonnes submerged[source]
Sierra I : 7,200 tons (surfaced) 8,300 tons (submerged) Sierra II : 7,600 tons (surfaced) 9,100 tons (submerged)[source]
Maximum; Submerged
Single sourceMaximum; Surfaced
Single source15 knots (28 km/h; 17 mph) surfaced 32 knots (59 km/h; 37 mph) submerged[source]
Maximum; Sierra I & II surfaced
Single sourceMaximum; Sierra II submerged
Single sourceBars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
Sierra class[source] |
| Builders | Sevmash[source] | Krasnoye Sormovo[source] |
|---|
| Operators | Soviet Navy Russian Navy[source] | Soviet Navy Russian Navy[source] |
|---|
| Preceded by | Papa class Charlie class[source] | Alfa class , Victor class[source] |
|---|
| Succeeded by | Yasen class[source] | Akula class[source] |
|---|
| Built | 1975–2022, may be restarted[source] | 1979–1992[source] |
|---|
| In commission | 1980–present[source] | 1984–present[source] |
|---|
| Planned | 20 (2 949, 18 949A)[source] |
|---|
| Completed | 14 (2 949, 11 949A, 1 09852)[source] |
|---|
| Canceled | 6 (2 incomplete, 4 never laid down)[source] |
|---|
| Active | 6 (modernization of some boats to 949AM)[source] |
|---|
| Laid up |
|---|
| Lost | — |
|---|
| Retired | 5?[source] | — |
|---|
| Type | Nuclear-powered cruise missile submarine[source] | Nuclear attack submarine[source] |
|---|
| Endurance | 120 days[source] | — |
|---|
| Test depth | 600 m[source] | — |
|---|
| Armament | 4 × 533 mm (21.0 in) and 2 × 650 mm (26 in) torpedo tubes in bow 28 × 533 mm and 650 mm weapons, including RPK-2 Vyuga (SS-N-15 Starfish) anti-submarine missiles with 15 kt nuclear warheads and RPK-6 Vodopad/RPK-7 Veter (SS-N-16) anti-submarine missiles with 200 kt nuclear warhead or Type 40 anti-submarine torpedo or 32 ground mines 24 × P-700 Granit (SS-N-19 Shipwreck) cruise missiles with 750 kilograms (1,650 lb) HE or 6 × 100 Mt Poseidon nuclear-powered, nuclear-armed drones[source] | Sierra I & II: 4 × 650 mm (26 in) torpedo tubes (only Sierra I) 4 × 530 mm (21 in) torpedo tubes ( 6 x Sierra II) SS-N-21 Sampson SLCM SS-N-15 Starfish anti-submarine weapon: 200 kt depth charge or 90 kg HE Type 40 torpedo SS-N-16 Stallion , 200 kt depth charge or 90 kg HE Type 40 torpedo Minelaying configuration : 42 mines instead of torpedoes[source] |
|---|
| Alternative designation | Oscar II[source] | — |
|---|
| Country of origin | Soviet Union[source] | Soviet Union[source] |
|---|
Maximum; Sierra I submerged
Single sourceSierra I & II: 10 knots (18.5 km/h) (surfaced) Sierra I: 34 knots (63.0 km/h) (submerged) Sierra II: 32 knots (59.3 km/h) (submerged)[source]