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Submarines1997–present
Ballistic missile submarine
Triomphant-class submarine is a ballistic missile submarine. It was built by DCNS. Reported operators include French Navy.
Triomphant-class submarine
Marine nationale · CC BY-SA 3.0 · Resized · CC BY-SA 3.0 · Source ↗ · ModifiedLe Triomphant class
DCNS
French Navy
Le Redoutable class
L'Invincible class
€ 17.1 billion (2009) (equivalent to € 22.2 billion in 2025) for 4 units € 3.1 billion (2009) (equivalent to € 4 billion in 2025) for Le Terrible
1986–2010
1997–present
4
4
4
Ballistic missile submarine
12,640 tonne (surfaced) 14,335 tonne (submerged)
138 m (453 ft)
12.50 m (41.0 ft)
10.60 m (34.8 ft)
K15 pressurized water reactor 150 MWth, LEU 7%; with turboreductor pump-to-shaft system of 30,5 MW Power : 30,519 kW (40,927 hp) two emergency diesel-powered generators SEMT Pielstick 8PA4V200 SM (700 kW (940 hp)) auxiliaries.
Over 25 kn (46 km/h)
Unlimited distance; 20–25 years
Over 400 m (1,300 ft)
15 officers 96 sailors
Sonar DMUX 80 Sonar DUUX 5 Sonar DSUV 61B Very Low Frequency Racal Decca radar (navigation) SCC : SET ( Système d'exploitation Tactique ) : tactical operational system
ARUR 13
Nuclear: 16 M45 or M51/51.3 missiles with six to ten TN 75 150 kt or TNO 100-300 kt thermonuclear warheads Four 533 mm (21 in) torpedo tubes for F17 torpedoes and Exocet SM39 anti-ship missiles , launchable while submerged
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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| 28 Sept 2026 | 138 m | Wikipedia contributors | superseded |
Triomphant-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
FranceReported count for Le Triomphant class. Service scope: French Navy ships; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Excludes retired/reserve/on-order rows. Count column(s): in service: 4. Origin: unstated. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.