Data Quality83%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the attack submarines (ssn) category.
01 / Overview
Sierra II-class submarine
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
ATTACK SUBMARINES (SSN) · COLD WAR
7
PERFORMANCE/PRICE
55
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the attack submarines (ssn) category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
- Hull Classificationtitanium hull
- Submarine Typenuclear attack submarine
- Builder / ShipyardKrasnoye Sormovo
- Laid Down1979
- Commissioned1990
- Boats in Class2
- In ServiceYes
◈Displacement & Dimensions5MOD.5
- Surfaced Displacement7,600 t
- Submerged Displacement9,100 t
- Length110 m
- Beam14.2 m
- Draft8.8 m
▣Propulsion8MOD.8
- PropulsionNuclear
- Reactor TypeOK-650 pressurized water reactor
- Nuclear-PoweredYes
- Air-Independent Propulsion (AIP)No
- Shaft Power43,000 kW
- Propulsor Type1 shaft, 2 spinners
- Top Speed (surfaced)10 kn
- Top Speed (submerged)32 kn
◇Diving & Endurance1MOD.1
- Complement (crew)72
◆Armament6MOD.6
- Torpedo Tubes6
- Torpedo Tube Diameter533 mm
- Cruise MissilesYes
- Ballistic Missiles (SLBM)No
- SLBM Count0
- Mine-Laying CapableYes
▤Sensors1MOD.1
⬢Stealth2MOD.2
▲Production2MOD.2
- First of Class1990
- Operators2
◎Fleet Status5MOD.5
- Completed2
- Active2
- Under Construction0
- Planned5
- Cancelled1
03 / History
SERVICE LIFESPANStill in Service
- 1979Production started
- 1992Entered service
47
years in service
13
years in production
2
units produced
1
countries operating
ⓘ The producing country still actively operates it.
05 / MASS Score
ATTACK SUBMARINES (SSN) RANKING Attack Submarines (SSN) · Cold War
MASS RANKINGSMASS ↗
13ATTACK SUBMARINES (SSN)7COLD WAR · ATTACK SUBMARINES (SSN)239RUSSIA · ALL WEAPONS23PERFORMANCE/PRICE · ATTACK SUBMARINES (SSN)
ⓘ Rankings are within theAttack Submarines (SSN)category.
📖 TERMS ON THIS PAGE4terms
Cruise missiles are self-propelled, guided weapons launched from platforms like attack submarines (SSNs) to deliver warheads over long distances with precision.
Laying explosive mines underwater from a submarine.
Relating to or using nuclear energy, typically fission, for propulsion or power generation in military vessels.
A system of hydrophones towed behind a vessel to detect submarines and torpedoes, minimizing interference from the ship's self-noise.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources