Naval Group delivered on 06 November 2020 the Suffren (S635) nuclear attack submarine (SSN) to the French Armament Procurement Agency (Direction Générale de l’Armement) at the Toulon naval base. Intended for the French Navy, the Suffren is the first in a series of six SSN that will gradually replace the submarines of the Rubis-class. The delivery of the Suffren took place today in the presence of a small number of high-ranking personalities, due to the health crisis. Florence Parly, French Minister of Defence, General François Lecointre, Chief of Staff of the French Armed Forces, Joël Barre, Delegate General for Armament, Admiral Pierre Vandier, Chief of Staff of the French Navy, Victor Salvetti, Director of military applications at the French Alternative Energies and Atomic Energy Commission (CEA), Pierre Eric Pommellet, CEO Naval Group, and Loïc Rocard, CEO TechnicAtome, all welcomed this major milestone of the Barracuda program, in the presence of several representatives of the political, industrial and military worlds, including crew members.

Launched in 1998 by the French Defence Procurement Agency (DGA), the Barracuda program renews the submarine component of the French nuclear deterrence capability consisting of six Rubis-class submarines that entered service in the early 1980s. The associated development contract was notified at the end of 2006. More than ten years of studies were required to define a submarine that meets the French Navy’s operational requirements. This first delivery is the beginning of a phase leading to the qualification of this new class.

The delivery of the six submarines will take place over a decade. With a lifespan of more than 30 years, the Suffren-class submarines will be the backbone of the French submarine forces until at least 2060, making it one of the major weapon systems of this century.

Pierre Eric Pommellet, CEO Naval Group, declared: «What a long way Naval Group has come with its industrial and governmental partners since the first metal sheet was cut on December 10, 2007, less than a year after the DGA had signed the acquisition contract. The industrial challenges have been numerous. I salute the commitment of Naval Group’s design and production teams, of TechnicAtome – the prime contractor for the onboard nuclear boiler room – as well as those of the DGA, the CEA and the French Navy. Hundreds of French companies – both large and small, at the forefront of which Naval Group stands, have been and continue to be mobilised for the construction of this program. This initial success can only strengthen our collective commitment to deliver the next unit of the Barracuda series, the Duguay-Trouin, in 2022, followed by the other four submarines by the end of the decade».

The construction of these Barracuda submarines mobilises a wide range of exceptional know-how in the most advanced technologies.

Among these, the very special steels, underwater acoustics performances, and the weapon systems make the SSN Barracuda one of the most efficient submarines in the world.

The Barracuda submarines, with their navigation and communication means and their centralised and automated control are also more manoeuvrable and mobile. Another major innovation is the optronic mast, which replaces the telescopic mast, ensuring better collection of visual information and better sharing of this information among the crew. This new feature, combined with advanced detection capabilities, guarantees the superiority of Barracuda submarines in their intelligence missions.

The Barracuda series also offers the French Navy a real combat superiority with, for the first time, a deep strike capability thanks to MBDA Naval Cruise Missiles (NCM). They can also use the Naval Group new Naval Group heavy torpedo F21 as well as MBDA SM39 missiles. The Barracuda submarines also enable the discreet and enhanced deployment of special forces.

This technological and capability leap is the result of more than twenty years of collective work between Naval Group and hundreds of partners of the European defence industrial and technological base. A total of 2,500 men and women (including around 800 from Naval Group subcontractors) are contributing to the design and production of the Barracuda submarines.

All Naval Group sites are currently mobilised for the next five Barracuda submarines. The second of the Barracuda series, the Duguay-Trouin, whose sections will be fully joined by the end of this year, will be delivered in 2022. The third, the Tourville, is being integrated at the side of the Duguay-Trouin. At the Naval Group site in Nantes-Indret, the assembly of the propulsion system and of the nuclear boiler module of the fourth, the De Grasse, is also underway. Finally, Naval Group teams have begun forming the first elements of the hulls of the fifth and sixth submarines, the Rubis and the Casabianca, as well as elements of their nuclear boiler modules.

The infrastructures at the Toulon naval base have been modernised to accommodate this new generation of submarines: «We are ready and very proud to work on the through-life support of the Suffren (S635) in Toulon», said Vincent Vimont, Director of the SSN Operational Maintenance Program at Naval Group.

The project started with definition studies in 2014 and mobilised around 200 people from Naval Group and from 15 subcontractors. Two other basins will also be modernised in the coming years. The teams at the Naval Group Toulon site, specialised in the through-life support of submarines, have been trained in the new technical specifications of the submarine and in the use of the new facilities. They are now qualified to carry out maintenance operations on the Suffren (S635) and her sisterships.

«We managed to optimise the sea trials phase within a 6-month schedule, including 100 days at sea! By comparison, for the Rubis-class it was 15 months! This is the first time that a new vessel has been able to sail twice in a continuous one-month period during her sea trials phase. This demonstrated the submarine’s endurance to our client. To improve our work efficiency, we reduced the number of ashore trials and optimised sea trials», says Philippe Nezondet, head of Suffren (S635) trials at Naval Group.

The sea trials – conducted by the DGA as the ship is manned by the French Navy – aim at proofing the Suffren capacities and the conformity to the ship specifications in order to qualify the Barracuda submarines. These sea trials represent an intense validation phase for a nuclear submarine’s on-board installations. The operations conducted progressively over several test campaigns have made it possible to ensure that the vessel is watertight underwater, that she can be properly maneuvered, but also to assess the performance of the combat system, tactical weapons and all the high-tech equipment on-board. These tests were concluded with the firing of the SM39 missile on September 23, and of the Naval Cruise Missile (NCM) on October 20. The NCM is a major advantage of the Barracuda submarines over their predecessors: French submarines will now be able to fire underwater and hit a land-based target several hundred kilometres away. This new capability guarantees the technological superiority of French Navy ships.

Technical characteristics of the Suffren-class SSN

According to Defense-aerospace.com, Florence Parly, Minister of the Armed Forces, welcomes the first dive in the Suffren at sea, carried out on Tuesday April 28, 2020, after her departure from the naval base of Cherbourg. The Suffren is the first of six Barracuda nuclear attack submarines.

Led by the French Armaments Directorate (DGA), these sea trials, which will last several months, will confirm the robustness and efficiency of the submarine before her hand-over to the French Navy.

At dockside as at sea, the test campaign will follow the specific health prevention and precautionary measures linked to the COVID-19 pandemic.

The SSNs are real instruments of power, enduring and discreet. Their missions are varied, and range from support to the deterrent force, protection of the carrier strike group, intelligence gathering, and anti-submarine and anti-ship warfare. Suffren-type SSNs will add a land-attack cruise missile capability and will be optimized for the deployment of special forces.

With the Suffren, France is starting to renew its fleet of SSNs, which entered service in the 1980s, and will thus have modern submarines among the most efficient in the world.

With this first outing at sea, the Barracuda program crosses a major milestone after the launch of Suffren, on July 12, 2019, by the President of the Republic.

Over the past eight months, the program’s industrial and state teams have successfully conducted all of the Suffren’s dockside tests aimed at verifying the proper functioning of its various systems and equipment. Three prerequisites have been validated: the combat system has reached the end of its tests on land and is ready for the continuation of assessments at sea; the nuclear reactor was started at the end of 2019 after loading its fuel and, finally, in January 2020 the submarine was floated to validate the first waterproofness tests.

Started in the English Channel, these sea trials will later take the Suffren to the Atlantic and finally to the Mediterranean. Under the supervision of engineers and technicians from the DGA, the French Atomic Energy and Alternative Energies Commission (CEA), Naval Group and TechnicAtome, they will be carried out by submariners of the French Navy who will gradually check all of the boat’s technical and operational capabilities.

They are due to last several months until her delivery scheduled for later this year. During the entire phase of sea trials, the boat remains the property of Naval Group. She is placed under the responsibility of the French Navy for operational command and as a delegated nuclear operator. As the contracting authority for the Barracuda program, the DGA is responsible for testing up to the acceptance of the boat and her delivery to the French Navy.

The DGA worked with the CEA, the French Navy and industrial prime contractors to allow the program to continue under specific health conditions. Since March 16, the business continuity plan for the Cherbourg site and the Barracuda program takes into account all measures to ensure the health and safety of personnel.

In particular, all personnel on board for sea trials have been placed in preventive quarantine, and have been tested negative for COVID-19. On board, wearing a mask will be mandatory at all times and the rules of hygiene and disinfection will be strictly applied.

Technical characteristics