French submarine Triomphant (S616)

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For other ships with the same name, see French ship Triomphant.
Téméraire, sister-ship of Triomphant
Name: Triomphant
Cost: 4.282 billions (2010)[1]
Laid down: 9 June 1989
Launched: 26 March 1994
Commissioned: 21 March 1997[2]
Homeport: Île Longue
Identification: S616
General characteristics
Class and type: Triomphant-class submarine
  • 12 640 tonnes (surfaced)[3]
  • 14 335 t (submerged)[2]
Length: 138 m (453 ft)[2]
Beam: 12.50 m (41.0 ft)
Draught: 10.60 m (34.8 ft)
  • Pressurised water K15 nuclear reactor (150 MW (200,000 hp)), turboreductor system, Pump-jet
  • 2 SEMT Pielstick diesels-alternators 8PA4V200 SM (700 kW (940 hp)) auxiliaries.
  • 30,500 kW (40,900 hp)[4]
Speed: over 25 knots (46 km/h; 29 mph)[2]
Range: Unlimited distance; 20–25 years
Test depth: Over 400 m (1,300 ft)
Complement: 110, including 15 officers[3]
Sensors and
processing systems:
  • 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[4]
Electronic warfare
& decoys:

Triomphant is a strategic nuclear submarine of the French Navy; she is the lead boat of her class. In 2009 she was involved in the HMS Vanguard and Triomphant submarine collision with a British nuclear submarine.


Construction and testing[edit]

The first metal of Triomphant was cut at DCN Cherbourg in October 1986, and her engine was shipped to her from DCN Indret five years later. The reactor was built into the vessel in August 1991, with the fore and aft sections being welded on in January and April 1992 respectively. She was armed and given a commander in May 1992 and moved from the assembly site to the completion basin in July 1993. Her launch in March 1994 was followed by her first dive that June and her trip from DCN Cherbourg to lle Longue that July down the "free route" between Cherbourg and Brest, with a crew of 110 and engineers from DCN Cherbourg. On 4 January 1995, during testing, she reached her maximum depth for the first time and made her first firing of a ballistic missile the following month. Photographs of her were exhibited to the Senate of France from 15 to 23 May 1995. In June she set off back to Cherbourg for Post-Testing Upgrades (Remises A Niveau Après Essais or RANAE), then set off for a second set of trials, making 1,300 hours of test dives in total and a five-week trip. She then spent five weeks in maintenance at Cherbourg and during her main weapons tests took on 11 torpedo models, five trial torpedoes and one Exocet SM39 exercise. As a deterrent system, a salvo of 15 models was successfully launched and, in the last round of development, she functioned successfully as a missile platform even if her engine did not achieve its best. She left Cherbourg on 7 March 1996 for her second round of trials, with the final tests of her nuclear boiler coming on 12 July and of her weapons systems on 26 August.[citation needed]

Active service[edit]

Triomphant entered active service in March 1997. On 18 October 2001, the fleet support service notified the DCN that Triomphant was about to take her first period of Unavailability for Maintenance and Repairs (IPER or Indisponibilité pour Entretien et Réparations). The 150 million Euro contract was granted to DCN, with the IPER starting at Ile Longue on 2 April 2002, scheduled for 29 months in all. In this, her first major refit, her missiles and the fuel elements of her nuclear boiler were disembarked. In August 2004 L'Humanité ran a piece with the headline "Pas si Triomphant que ça" reporting that Triomphant had suffered a nuclear leak from one of her nuclear warheads by the end of 1997 and from her reactor in 2004, though the FOST downplayed the incidents and stated no radiation had been released since the reactor had been nonoperational at the time. She carried out a test flight of a M45 strategic missile on 1 February 2005 in the Atlantic. In the night between 3–4 February 2009, Triomphant collided with the Royal Navy submarine HMS Vanguard.[2][5] Triomphant was reported to have proceeded to Brest under her own power, submerged, but with extensive damage to her sonar dome.

The French originally claimed that Triomphant had "collided with an immersed object (probably a container)". After Vanguard returned to harbour, it was confirmed that the collision was in fact with her.[5]


  1. ^ "French Audit Report Reveals Weapon Prices, A400M Details". 18 February 2010. Retrieved 7 August 2015. 
  2. ^ a b c d e Byers, David; Charles Bremner (February 16, 2009). "British and French nuclear submarines 'crash in Atlantic'". London: The Times. Retrieved 2009-02-16. 
  3. ^ a b "Specifications: SSBN Triomphant Class Ballistic Missile Submarines, France". Retrieved 2009-02-16. 
  4. ^ a b c "SSBN Triomphant Class Ballistic Missile Submarines, France". Retrieved 2009-02-16. 
  5. ^ a b "Nuclear subs 'collide in ocean'". BBC. 16 February 2009. Retrieved 2009-02-16. 

External links[edit]