Data Quality82%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the ballistic missile submarines (ssbn) category.
01 / Overview
Triomphant-class submarine
Country
Prime contractor
Production
1994–2010
Quantity
4
Unit Price (current)
$6.4B↗ 50% inflation · 2009→2025
Original Price
$4.3B (2009)
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
BALLISTIC MISSILE SUBMARINES (SSBN) · POST-COLD WAR
2
PERFORMANCE/PRICE
65
UNIT COST (2025 USD)
$6.4B
Original: $4.3B (2009)
Inflation: +%50
ⓘ Performance/Price and MASS score are computed across all units in the ballistic missile submarines (ssbn) category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
- Hull ClassificationBallistic missile submarine
- Submarine TypeSSBN
- Builder / ShipyardDCNS
- Laid Down1986
- Commissioned1997
- Boats in Class4
- In ServiceYes
◈Displacement & Dimensions5MOD.5
- Surfaced Displacement12,640 t
- Submerged Displacement14,335 t
- Length138 m
- Beam12.5 m
- Draft10.6 m
▣Propulsion7MOD.7
- PropulsionNuclear
- Reactor TypeK15 pressurized water reactor
- Nuclear-PoweredYes
- Air-Independent Propulsion (AIP)No
- Shaft Power30,519 kW
- Propulsor Typepump-jet
- Top Speed (submerged)25 kn
◇Diving & Endurance2MOD.2
- Test Depth400 m
- Complement (crew)115
◆Armament7MOD.7
- Torpedo Tubes4
- Torpedo Tube Diameter533 mm
- Cruise MissilesYes
- Ballistic Missiles (SLBM)Yes
- SLBM Count16
- Anti-Ship MissilesYes
- Mine-Laying CapableNo
▤Sensors6MOD.6
- Bow SonarSonar DMUX 80
- Flank Array SonarYes
- Towed Array SonarYes
- Surface-Search RadarRacal Decca radar
- ESM / ELINT SuiteYes
- Combat SystemSET (Système d'exploitation Tactique)
⬢Stealth3MOD.3
▲Production3MOD.3
- Unit Cost4,275,000,000 USD
- First of Class1997
- Operators1
◎Fleet Status8MOD.8
- Completed4
- Active4
- Under Construction0
- Planned4
- Cancelled0
- Lost0
- Retired0
- Preserved0
03 / History
SERVICE LIFESPANStill in Service
- 1994Production started
- 2010Production ended
32
years in service
16
years in production
4
units produced
1
countries operating
ⓘ The producing country still actively operates it.
05 / MASS Score
BALLISTIC MISSILE SUBMARINES (SSBN) RANKING Ballistic Missile Submarines (SSBN) · Post-Cold War
MASS RANKINGSMASS ↗
4BALLISTIC MISSILE SUBMARINES (SSBN)2POST-COLD WAR · BALLISTIC MISSILE SUBMARINES (SSBN)1FRANCE · ALL WEAPONS3PRICE · BALLISTIC MISSILE SUBMARINES (SSBN)10PRICE · ALL WEAPONS20PERFORMANCE/PRICE · BALLISTIC MISSILE SUBMARINES (SSBN)
ⓘ Rankings are within theBallistic Missile Submarines (SSBN)category.
📖 TERMS ON THIS PAGE10terms
Anechoic coating: A type of sonar-absorbing material applied to submarines to reduce their acoustic signature. It consists of rubber or other materials with properties that minimize sound reflection.
Anti-ship missiles are guided missiles designed to engage and destroy naval vessels. They are typically used by aircraft, ships, or submarines to attack enemy ships.
Ballistic missiles are rocket‑propelled weapons that follow a ballistic trajectory after launch, delivering warheads over long distances; submarine‑launched variants (SLBMs) are fired from submerged submarines.
Cruise missiles are self-propelled, guided weapons launched from platforms like attack submarines (SSNs) to deliver warheads over long distances with precision.
Electronic Support Measures/ELectronic INTelligence suite: a sensor system on submarines that detects, identifies, and locates radar and communication emissions for passive threat assessment and tactical advantage.
Sonar system mounted on submarine's flanks to detect targets.
Relating to or using nuclear energy, typically fission, for propulsion or power generation in military vessels.
A pump-jet propulsor is a type of propulsion system used in submarines, utilizing a pump-jet to generate thrust.
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