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Submarines1984–present
Nuclear attack submarine
Sierra-class submarine is a nuclear attack submarine. It was built by Krasnoye Sormovo. Reported operators include Soviet Navy Russian Navy.
AI-generated illustration · Not a photograph — Representative exterior; geometry is illustrative. Not evidence for specifications.
ForceTally · AI-generated illustration · Not a photograph · AI-generated · OpenAI output terms · Source ↗ · ModifiedSierra class
Krasnoye Sormovo
Soviet Navy Russian Navy
Alfa class , Victor class
Akula class
1979–1992
1984–present
5
4
1
2
2
Nuclear attack submarine
Sierra I : 7,200 tons (surfaced) 8,300 tons (submerged) Sierra II : 7,600 tons (surfaced) 9,100 tons (submerged)
Sierra I : 107.16 m (351.6 ft) Sierra II : 110 m (360 ft)
Sierra I: 12.28 m (40.3 ft) Sierra II: 14.2 m (47 ft)
Sierra I: 8.8 m (29 ft) Sierra II: 8.8 m (29 ft)
Sierra I & II: 1 × PWR , 190 MW ( HEU <= 45% ) 2 × 1,002 hp (747 kW) emergency motors 1 shaft, 2 spinners
Sierra 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)
Effectively unlimited, except by food supplies
Sierra I & II: 61 & 72
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
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 107.16 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 107.16 m | Wikipedia contributors | approved |
| 28 Sept 2026 | 107.16 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 107.16 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 107.16 m | Wikipedia contributors | superseded |
Sierra-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.