Engineering:Suffren-class submarine

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Short description: Nuclear attack submarine
Suffren class
Suffren class profile
Class overview
Name: Suffren class
Builders: Naval Group
Operators:  French Navy
Preceded by: Script error: The function "sclass" does not exist.
Subclasses: Script error: The function "sclass" does not exist.
Cost: €10.42 billion (2014)[1] for 6 units (about €1.73 billion (2014) per unit )
Built: 2007–present
In commission: 2020–present[2]
Planned: 6
Building: 3
Completed: 3
Active: 3
General characteristics
Type: Nuclear attack submarine
Displacement:
  • 4,765 t (4,690 long tons) surfaced
  • 5,300 t (5,200 long tons) submerged
Length: 99.5 m (326 ft 5 in)
Beam: 8.8 m (28 ft 10 in)
Draught: 7.3 m (23 ft 11 in)
Propulsion:
  • K15 nuclear reactor, 150 MW (200,000 hp)
  • 2 x Turbo-generator groups: 10 MW (13,000 hp) each
  • 2 x emergency diesel generators 480 kW (640 hp) each
  • 1 x pump-jet electrically driven
Speed:
  • Over 25 kn (46 km/h; 29 mph)
  • 14 kn (26 km/h; 16 mph), surfaced
Range: Unlimited range
Endurance: Depends on the amount of food carried or potential crew fatigue while operational (typically 70 days worth of food is embarked)[3]
Test depth: >350 m (1,150 ft)[4]
Complement:
  • 12 officers
  • 48 petty officers
Sensors and
processing systems:
  • Naval Group SYCOBS combat management system
  • Thales UMS-3000 hull and flank array sonar suite
  • ETBF DSUV 62C towed array sonar
  • Thales SEACLEAR mine and obstacle avoidance sonar
  • Thales VELOX-M8 broadband sonar interceptor
  • Thales NUSS-2F Mk2 navigation echo sounder
  • Safran Series 10 CSR navigation radar
  • NEMESIS electronic countermeasure system
Armament:
  • 4 × 533 mm (21.0 in) tubes
  • 20 storage racks for:
    • MdCN land-attack missiles
    • Exocet SM39 Mod2 anti-ship missiles
    • F21 Artemis heavyweight torpedoes
    • FG29 multi-influence mines[5][6]

The Suffren class is a class of nuclear-powered attack submarines, designed by the French shipbuilder Naval Group (formerly DCNS) for the French Navy. It is intended to replace the Script error: The function "sclass" does not exist.. Construction began in 2007 and the lead boat of the class, missing name, was commissioned on 6 November 2020.[2] It officially entered active service on 3 June 2022.[7]

History

Development

In October 1998, the Delegation Générale pour l'Armement, the French government's defense procurement agency, established an integrated project team consisting of the Naval Staff, DCN (now known as Naval Group), Technicatome and the Commissariat à l'Énergie Atomique, a regulatory body that oversees nuclear power plants, to oversee a program the design of a new attack submarine class, called Barracuda.[8] DCN was to be the boat's designer and builder while Technicatome (since acquired by Areva) was to be responsible for the nuclear power plant. The two companies were to act jointly as a single prime contractor to share the industrial risks, manage the schedules, and be responsible for the design's performance and costs, which at the time was estimated to be US$4.9 billion.[8]

On 22 December 2006, the French government placed a €7.9 billion order for six Suffren submarines with Naval Group and their nuclear power plants with Areva-Technicatome.[9] According to the DGA "Competition at the subcontractor level will be open to foreign companies for the first time."[10] According to the contract, the first boat was to commence sea trials in early 2016, with delivery occurring in late 2016/early 2017. This was to be followed by entry into service in late 2017.[11] However, this timetable for service entry was later pushed back into the early 2020s.

The first boat of the class, Suffren, became fully operational in June 2022. The second boat of the class, Duguay-Trouin, also suffered delays but began sea trials on 26 March 2023,[12] performing her first dive on 27 and 28 March.[13] The submarine was formally delivered to the French Navy in August 2023.[14] In early 2024, Duguay-Trouin deployed to the Caribbean as part of her ongoing trials[15] and was declared fully operational in April 2024. The third submarine in the class, Tourville, began her sea trials in July 2024[16] and was delivered in November 2024.[17]

Description

The Barracudas will integrate technology from the Script error: The function "sclass" does not exist., including pump-jet propulsion. This class reportedly produces approximately ​1⁄1000 of the detectable noise of the Script error: The function "sclass" does not exist. boats, and they are ten times more sensitive in detecting other submarines.[18] They will be fitted with torpedo tube-launched MdCN cruise missiles for long-range (well above 1,000 km (620 mi)*) strikes against strategic land targets. Their missions will include anti-surface and anti-submarine warfare, land attack, intelligence gathering, crisis management and special operations.

The Barracuda class nuclear reactor incorporates several improvements over that of the preceding Script error: The function "sclass" does not exist.. Notably, it extends the time between refueling and complex overhauls (RCOHs) from 7 to 10 years, enabling higher at-sea availability. In support of special operations missions, the Barracuda can also accommodate up to 15 Commandos Marine. It integrates a removable dry deck shelter aft of the sail able to embark the commandos' new generation PSM3G Swimmer Delivery Vehicle (ECA Special Warfare Underwater Vehicle).[3]

Specifications

Designed by Naval Group and TechnicAtome, the Barracuda integrates the following systems:

Sensors, Electronics, Decoys
Combat management and Information Systems
Naval Group SYCOBS combat management system
Radars, Electronic Support Measures and Sonars
Thales UMS-3000 hull and flank array sonar suite
Thales ETBF DSUV 62C towed array sonar
Thales SEACLEAR mine and obstacle avoidance sonar
Thales VELOX-M8 broadband sonar interceptor
Thales NUSS-2F Mk2 navigation echo sounder
Safran Series 10 CSR navigation radar
Safran SIGMA 40 XP gyrolaser navigation systems
Safran Series 30 AOM attack optronic mast featuring an RESM module
Safran Series 30 SOM search optronic mast featuring an RESM module
Decoys, Countermeasures and jammers
Naval Group NEMESIS electronic countermeasure system with CANTO-S decoys and automatic evasive manoeuvres (confusion/dilution principle)
Communications
Thales PARTNER communications management system
Thales DIVESAT communications satellite mast with Syracuse satellite link
Link 11, Link 16 and Link 22 data links
Thales TUUM-5 MK2 distressed submarine (DISSUB) communication system
Weapons
4 tubes and 20 weapon racks for:
F21 Artémis heavyweight torpedoes
MdCN land-attack missiles
Exocet SM39 mod2 anti-ship missiles
FG29 multi-influence mines
D-19 UUV
Propulsion / Power
1 TechnicAtome K15 nuclear reactor (150 MW)
2 turbo-generators (10 MW each)
2 SEMPT Pielstick emergency diesel generators (480 kW each)
1 propeller pump (hydrojet)

Note: The Antenne Linéaire Remorquée à technologie Optique (ALRO) under development by Thales for the SNLE 3G is expected to replace the ETBF DSUV 62C towed array sonar on the Barracuda-class submarines. The Exocet SM39 submarine-launched anti-ship missile was initially expected to be replaced via the FMAN/FMC led by MBDA. However, the programme is no longer expected to produce any missile capable of being launched from submarines as their dimensions will not be compatible with torpedo tubes. MBDA is therefore pitching its Exocet SM40 under development as a successor to the SM39 post-2030.[19][20]

Boats

Pennant no. Name Laid down Launched Commissioned Full operational capability Homeport
S635[21] missing name 19 December 2007[22] 12 July 2019[23] 6 November 2020[2] 3 June 2022[24] Toulon
S636 missing name June 2009[22] 9 September 2022[25][26] 28 July 2023[27] 4 April 2024[28]
S637[29] missing name[30][31] June 2011[22] Summer 2023[32][33] 16 November 2024[34] 5 July 2025[35]
S638 De Grasse[36][37] 2014[30] Spring 2025[38][39] 2026[40] 2026/27
TBC Rubis[36][37] 2019 2027 2028[40] 2028/29
TBC Casabianca[36][37][41] 2020[41][42] 2028 2029/2030[43][40] 2030/31

Shortfin Barracuda conventional variant

Australia

Naval Group submitted a conventionally powered diesel-electric variation to the design – named the Shortfin Barracuda Block 1A, a derivative of the SMX Ocean concept – to the competitive evaluation process (CEP) phase of Australia's Collins-class submarine replacement. "While exact details remain confidential, DCNS can confirm the Shortfin Barracuda is over 90 metres (300 ft) in length and displaces more than 4,000 tons when dived," said Sean Costello, CEO of Naval Group Australia.[44] Naval Group was chosen by the Australian Government on 26 April 2016 to build twelve of the Shortfin Barracuda Block 1A variant at a projected AU$50 billion (US$38.5 billion). Much of the works were to be undertaken at ASC Pty Ltd in Adelaide, South Australia.[45][46] Construction was expected to begin in 2023.[47] The class would have been known as the Attack-class submarine with the first vessel named HMAS Attack. On 16 September 2021, Australia cancelled the Attack-class project and entered into a partnership with the United States and United Kingdom to obtain nuclear submarine technology (SSN-AUKUS).[48] The reactors are intended to run on weapons-grade uranium, be sealed, and last for thirty three years.[49] The ones France uses, on the other hand, have to be serviced every ten years since it switched from weapons-grade to low-enriched uranium (LEU) to fuel its nuclear-powered submarines from the Rubis class onward; this requires a domestic nuclear industry, which Australia lacks.

Netherlands

The Shortfin Barracuda class was proposed by Naval Group to the Royal Netherlands Navy as one of the three competitors in the Walrus-class replacement program. The design was competing against the Saab A26 submarine and the TKMS Type 212 submarine. On 15 March 2024 State Secretary for Defence Christophe van der Maat announced that Naval Group had been selected as the winning bid. The boats will be known as the Orka class, with the first two planned to be delivered within ten years of the contract signing.[50][51][52]

Greece

In July 2025, a formal process to acquire four additional submarines was started as part of a 20-year modernization plan estimated to cost $25 billion. The Type 218, Type 209NG, Script error: The function "sclass" does not exist., conventional Barracuda class and Blekinge class submarines are being considered.[53]

See also

  • List of submarines of France
  • Submarine forces (France)
  • Future of the French Navy
  • Future of the Royal Netherlands Navy
  • Cruise missile submarine

References

  1. ↑ "Projet de loi de finances pour 2015 : Défense : équipement des forces" (in fr). Senate of France. 20 November 2014. https://www.senat.fr/rap/a14-110-8/a14-110-819.html. 
  2. ↑ 2.0 2.1 2.2 "New Suffren Barracuda-class nuclear-powered attack submarine officially commissioned by French Navy". 6 November 2020. https://www.navyrecognition.com/index.php/news/defence-news/2020/november/9236-new-suffren-barracuda-class-nuclear-powered-attack-submarine-officially-commissioned-by-french-navy.html. 
  3. ↑ 3.0 3.1 "France's Future SSNs: The Barracuda Class". Defense Industry Daily. 28 October 2014. http://www.defenseindustrydaily.com/frances-future-ssns-the-barracuda-class-02902/. 
  4. ↑ "SSN Barracuda Nuclear Powered Attack Submarine - Naval Technology". https://www.naval-technology.com/projects/barracuda/#:~:text=Maximum%20speed%20will%20be%2025kt,missiles%2C%20surveillance%20and%20special%20operations.. 
  5. ↑ "Nouvelle génération de torpille lourde pour la Marine nationale : la F21". Naval Group. October 2008. http://www.dcnsgroup.com/files/naval_expert/fr_bd.pdf. 
  6. ↑ Vavasseur, Xavier (8 February 2015). "Exclusive Interview With The French Navy On The Barracuda SSN Program". navy-recognition.com. http://www.navyrecognition.com/index.php?option=com_content&task=view&id=2399. 
  7. ↑ "French Navy's 1st Suffren-class Nuclear Powered Submarine Enters Service". 3 June 2022. https://www.navalnews.com/naval-news/2022/06/french-navys-1st-suffren-class-nuclear-powered-submarine-enters-service/. 
  8. ↑ 8.0 8.1 Preston, Antony (1 October 2002). "France unveils plans for new barracuda SSNs". Sea Power. http://www.highbeam.com/doc/1P3-209601821.html. 
  9. ↑ "France orders six 'Barracuda' class nuclear-driven submarines". Agence France Presse. 22 December 2006. 
  10. ↑ "Navy League of the United States - Citizens in Support of the Sea Services". Archived from the original on 30 March 2006. http://webarchive.loc.gov/all/20060330024556/http%3A//www%2Enavyleague%2Eorg/sea_power/oct_02_37%2Ephp. 
  11. ↑ "Les noms des futurs sous-marins nucléaires français dévoilés". 28 May 2007. http://www.meretmarine.com/fr/content/les-noms-des-futurs-sous-marins-nucleaires-francais-devoiles. 
  12. ↑ Groizeleau, Vincent (27 March 2023). "Le SNA Duguay-Trouin fait sa première sortie en rade de Cherbourg" (in fr). Mer et Marine. https://www.meretmarine.com/fr/defense/le-sna-duguay-trouin-fait-sa-premiere-sortie-en-rade-de-cherbourg. 
  13. ↑ Vavasseur, Xavier (28 March 2023). "France's 2nd Barracuda Type Submarine Aces Alpha Trials". Naval News. https://www.navalnews.com/naval-news/2023/03/frances-2nd-barracuda-type-submarine-aces-alpha-trials/. 
  14. ↑ "French Navy Receives 2nd Barracuda Type Submarine". 12 August 2023. https://www.navalnews.com/naval-news/2023/08/french-navy-receives-2nd-barracuda-type-submarine/. 
  15. ↑ "Le SNA Duguay-Trouin aux Antilles". Mer et Marine. 7 March 2024. https://www.meretmarine.com/fr/defense/le-sna-duguay-trouin-aux-antilles. 
  16. ↑ Groizeleau, Vincent (12 July 2024). "Le SNA Tourville débute ses essais en mer". Mer et Marine. https://www.meretmarine.com/fr/defense/le-sna-tourville-debute-ses-essais-en-mer. 
  17. ↑ Groizeleau, Vincent (19 November 2024). "Naval Group livre le Tourville, troisième des six nouveaux SNA de la classe Suffren" (in French). https://www.meretmarine.com/fr/defense/naval-group-livre-le-tourville-troisieme-des-six-nouveaux-sna-de-la-classe-suffren. 
  18. ↑ "SNLE-NG Le Triomphant". netmarine.net. http://www.netmarine.net/bat/smarins/triompha/index.htm. 
  19. ↑ Lamigeon, Vincent (13 November 2024). "FMAN-FMC : menace sur les futurs missiles de MBDA ?" (in FR). https://www.challenges.fr/entreprise/defense/fman-fmc-menace-sur-les-futurs-missiles-de-mbda_911003. 
  20. ↑ Tanguy, Jean-Marc (5 November 2024). "Missiles : MBDA détaille les avancées du programme franco-britannique FMAN-FMC" (in FR). https://air-cosmos.com/article/missiles-mbda-detaille-les-avancees-du-programme-franco-britannique-fman-fmc-69575. 
  21. ↑ Vavasseur, Xavier (27 November 2021). "Naval Group Rolls Out 2nd Barracuda Type Submarine". Naval News. https://www.navalnews.com/naval-news/2021/11/naval-group-rolls-out-2nd-barracuda-type-submarine/. Retrieved 23 April 2023. 
  22. ↑ 22.0 22.1 22.2 Tringham, Kate (6 June 2022). "French Navy commissions first Barracuda submarine". Janes. https://www.janes.com/defence-news/news-detail/french-navy-commissions-first-barracuda-submarine. 
  23. ↑ Huberdeau, Emmanuel. "France launches first Barracuda SSN". https://www.janes.com/article/89843/france-launches-first-barracuda-ssn. 
  24. ↑ Groizeleau, Vincent (3 June 2022). "Le SNA Suffren admis au service actif" (in fr). Mer et Marine. https://www.meretmarine.com/fr/defense/le-sna-suffren-admis-au-service-actif. 
  25. ↑ Groizeleau, Vincent (4 October 2022). "Cherbourg : Mise en route de la chaufferie nucléaire du second SNA du type Suffren" (in fr). Mer et Marine. https://www.meretmarine.com/fr/defense/cherbourg-mise-en-route-de-la-chaufferie-nucleaire-du-second-sna-du-type-suffren. 
  26. ↑ Marchand, Chrismäel (8 September 2022). "Cherbourg. Le Duguay-Trouin, 2e sous-marin Barracuda, sera livré avec du retard" (in fr). La Presse de la Manche. https://actu.fr/normandie/cherbourg-en-cotentin_50129/cherbourg-le-duguay-trouin-2e-sous-marin-barracuda-sera-livre-avec-du-retard_53661409.html. 
  27. ↑ "French Navy Receives 2nd Barracuda Type Submarine". 12 August 2023. https://www.navalnews.com/naval-news/2023/08/french-navy-receives-2nd-barracuda-type-submarine/. 
  28. ↑ Lagneau, Laurent (2024-04-04). "Le sous-marin nucléaire d'attaque Duguay-Trouin a officiellement été admis au service actif" (in fr-FR). https://www.opex360.com/2024/04/04/le-sous-marin-nucleaire-dattaque-duguay-trouin-a-officiellement-ete-admis-au-service-actif/. 
  29. ↑ Manuel, Rojoef (26 April 2024). "Nuclear Ignition of France's Third Barracuda Submarine Tested". The Defense Post. https://www.thedefensepost.com/2024/04/26/france-barracuda-submarine-nuclear-test/. 
  30. ↑ 30.0 30.1 Tringham, Kate (30 November 2021). "Naval Group rolls out second Barracuda submarine". Janes. https://www.janes.com/defence-news/news-detail/naval-group-rolls-out-second-barracuda-submarine. 
  31. ↑ Groizeleau, Vincent (13 September 2021). "Création de l'équipage d'armement du SNA Duguay-Trouin" (in fr). https://www.meretmarine.com/fr/content/sna-duguay-trouin-0. 
  32. ↑ Lagneau, Laurent (24 April 2024). "Le réacteur nucléaire du sous-marin Tourville a été mis en route". https://www.opex360.com/2024/04/24/le-reacteur-nucleaire-du-sous-marin-tourville-a-ete-mis-en-route/. 
  33. ↑ Lagneau, Laurent (21 July 2024). "Naval Group a transféré le sous-marin nucléaire d'attaque Tourville vers le dispositif de mise à l'eau". https://www.opex360.com/2023/07/21/naval-group-a-transfere-le-sous-marin-nucleaire-dattaque-tourville-vers-le-dispositif-de-mise-a-leau/. 
  34. ↑ Groizeleau, Vincent (19 November 2024). "Naval Group livre le Tourville, troisième des six nouveaux SNA de la classe Suffren" (in French). https://www.meretmarine.com/fr/defense/naval-group-livre-le-tourville-troisieme-des-six-nouveaux-sna-de-la-classe-suffren. 
  35. ↑ "France commissions Tourville submarine and expands infrastructure for new-generation nuclear fleet". 5 July 2025. https://defence-industry.eu/france-commissions-tourville-submarine-and-expands-infrastructure-for-new-generation-nuclear-fleet/. 
  36. ↑ 36.0 36.1 36.2 "Programme Barracuda : mer en vue pour le Suffren" (in fr). Ministry of Defence of France. 23 July 2013. http://www.defense.gouv.fr/marine/magazine/traque-en-eaux-profondes/programme-barracuda-mer-en-vue-pour-le-suffren. 
  37. ↑ 37.0 37.1 37.2 "Analysis: Naval Group Suffren Barracuda-class new nuclear-powered attack submarine for the French Navy". 7 November 2020. https://www.navyrecognition.com/index.php/focus-analysis/naval-technology/9239-analysis-suffren-barracuda-class-new-nuclear-powered-attack-submarine-for-the-french-navy.html. 
  38. ↑ "France commissions Tourville submarine and expands infrastructure for new-generation nuclear fleet". 5 July 2025. https://defence-industry.eu/france-commissions-tourville-submarine-and-expands-infrastructure-for-new-generation-nuclear-fleet/. 
  39. ↑ Tanguy, Jean-Marc (27 May 2025). "Le « De Grasse », quatrième sous-marin de classe Suffren, rallie son dispositif de mise à l’eau" (in French). https://lemarin.ouest-france.fr/defense/le-de-grasse-quatrieme-sous-marin-de-classe-suffren-rallie-son-dispositif-de-mise-a-leau-35825336-3a51-11f0-9096-11e668431f68. 
  40. ↑ 40.0 40.1 40.2 Groizeleau, Vincent (1 February 2021). "Marine nationale : les programmes qui vont façonner la future flotte française" (in French). https://www.meretmarine.com/fr/content/marine-nationale-les-programmes-qui-vont-faconner-la-future-flotte-francaise. 
  41. ↑ 41.0 41.1 Groizeleau, Vincent (10 February 2020). "Sous-marins : Une troisième génération de Casabianca en construction" (in French). Mer et Marine. https://www.meretmarine.com/fr/content/sous-marins-une-troisieme-generation-de-casabianca-en-construction. 
  42. ↑ "French Navy future nuclear attack submarine SNA Suffren begins trials in Toulon". navyrecognition.com. 27 July 2020. https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2020/july/8772-french-navy-future-nuclear-attack-submarine-sna-suffren-begins-trials-in-toulon.html. 
  43. ↑ Vavasseur, Xavier (27 November 2021). "Naval Group Rolls Out 2nd Barracuda Type Submarine". Naval News. https://www.navalnews.com/naval-news/2021/11/naval-group-rolls-out-2nd-barracuda-type-submarine/. 
  44. ↑ "DCNS unveils Shortfin Barracuda" (Press release). Naval Group. 15 July 2015. Archived from the original on 29 October 2015. Retrieved 20 October 2015.
  45. ↑ "France wins $50b contract to help build Australia's new submarines" (Press release). Retrieved 26 April 2016.
  46. ↑ Starick, Paul (26 April 2016). "$50bn Future Submarines to be built at Osborne in Adelaide by French firm Naval Group". The Advertiser. http://www.adelaidenow.com.au/news/south-australia/pm-malcolm-turnbull-on-50bn-future-submarines-project/news-story/be2a8da55f6066ba070454d667729c04. 
  47. ↑ "Australia And Naval Group Ink Agreement On Attack-Class Submarine Program". Naval News. 23 March 2021. https://www.navalnews.com/naval-news/2021/03/australia-and-naval-group-ink-agreement-on-attack-class-submarine-program/. 
  48. ↑ GDC (16 September 2021). "Australia To Acquire Nuclear-powered Submarine, Scraps Conventional Submarine Project" (in en-US). https://www.globaldefensecorp.com/2021/09/16/australia-to-acquire-nuclear-powered-submarine-scraps-conventional-submarine-project/. 
  49. ↑ "Australia considered buying nuclear submarines from France before ditching deal, Peter Dutton says". The Guardian. 17 September 2021. https://www.theguardian.com/australia-news/2021/sep/17/australia-considered-buying-nuclear-submarines-from-france-before-ditching-deal-peter-dutton-says. 
  50. ↑ "Bouw nieuwe onderzeeboten voorlopig gegund aan Naval" (in nl). Dutch Ministry of Defense. 15 March 2024. https://www.defensie.nl/onderwerpen/materieel/nieuws/2024/03/15/bouw-nieuwe-onderzeeboten-voorlopig-gegund-aan-naval. 
  51. ↑ "Defensie bevestigt miljardenproject: nieuwe onderzeeërs heten Orka, Zwaardvis, Barracuda en Tijgerhaai" (in nl). RTL Nieuws. 15 March 2024. https://www.rtlnieuws.nl/nieuws/nederland/artikel/5440314/nieuwe-onderzeeers-heten-orka-zwaardvis-barracuda-en-tijgerhaai. 
  52. ↑ "The Netherlands Select Naval Group For Its New Submarines" (in en). Naval News. 15 March 2024. https://www.navalnews.com/naval-news/2024/03/the-netherlands-select-naval-group-for-its-new-submarines/. 
  53. ↑ Brahy, Jérôme. "Greece to obtain first strategic sea-to-land strike capability with purchase of four new submarines" (in en-gb). https://www.armyrecognition.com/news/navy-news/2025/greece-to-obtain-first-strategic-sea-to-land-strike-capability-with-purchase-of-four-new-submarines. 

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