French Navy Receives Its First FDI Frigate Amiral Ronarc’h at Brest Naval Base

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On October 17, 2025, the French Navy reached a significant milestone with the formal handover of the first Frégate de Défense et d’Intervention (FDI) by Naval Group to the Direction générale de l’armement (DGA) in Brest. This event marked the beginning of a new era for France’s maritime defense capabilities. The ship, named Amiral Ronarc'h (D660), is the first of five units ordered to reinforce the French fleet. Stationed at Brest, the second-largest naval base on the Atlantic coast, the vessel has now entered its operational trial phase and is expected to become fully active in 2026.

Photo: DGA

Role and Capabilities

The FDI-class frigates are designed as true multi-role combatants, capable of addressing a wide spectrum of modern naval threats. Their mission profiles include anti-air warfare (AAW), anti-surface warfare (ASuW), and anti-submarine warfare (ASW). This versatility ensures that the ships can operate independently or as part of larger task forces, providing France with a flexible and powerful maritime tool.

The frigates are equipped to carry an NH90 NFH helicopter, vertical take-off and landing unmanned aerial vehicles (UAV VTOL), and even special forces units for rapid deployment. These assets significantly expand the ship’s operational reach, allowing it to conduct surveillance, strike missions, and amphibious support.

One of the defining features of the FDI program is its emphasis on advanced communication and data link systems. These technologies enable seamless integration with allied forces, ensuring interoperability in multinational operations. The modular design of the ships also enhances survivability, making them resilient against asymmetric threats such as drone swarms, as well as high-intensity naval combat scenarios. Furthermore, the integration of cutting-edge digital technologies and data processing systems ensures that the FDI frigates remain relevant against evolving threats well into the future.

Program and Production

The FDI program represents a major step in modernizing the French Navy. The lead ship, Amiral Ronarc'h was laid down in December 2021 and launched in November 2022. Production takes place at the modernized Lorient shipyard, which has been upgraded to deliver two ships per year, ensuring timely completion of the program.

The French order consists of five ships: Amiral Ronarc'h (D660), Amiral Louzeau, Amiral Castex, Amiral Nomy, and Amiral Cabanier. While three units have already been ordered, the remaining two will follow in the coming years.

Technical Specifications

The FDI-class frigates displace 4,500 tons and measure 122 meters in length with a beam of 18 meters. They are capable of reaching speeds of up to 27 knots and have an endurance of 45 days at sea. With an operational availability of 3,500 hours per year, these ships are designed for sustained deployments across the globe.

The crew complement consists of 125 sailors, with accommodations for an additional 28 passengers, such as embarked forces or mission specialists. Aviation facilities include a hangar and flight deck capable of supporting a 10-ton helicopter and UAV VTOL systems, further enhancing the ship’s versatility.

Weapons and Defense Systems

The French Navy’s configuration of the FDI frigates is centered on a balanced and powerful weapons suite. For air defense, the ships are armed with 16 Aster surface-to-air missiles produced by MBDA, providing protection against aircraft and incoming missiles. Anti-ship capabilities are delivered by eight Exocet MM40 Block 3c missiles, also from MBDA, which are renowned for their precision and range.

For anti-submarine warfare, the frigates are fitted with MU 90 torpedoes developed by Naval Group, supported by advanced sonar and detection systems. A 76 mm main gun provides surface engagement and shore bombardment capabilities, while two remotely operated Narwhal 20 mm systems offer close-in defense against fast attack craft and drones. Additionally, four torpedo tubes and the CANTO decoy system provide layered protection against submarine and torpedo threats.

Strategic Importance of the FDI Frigate for France

The introduction of the FDI-class frigates represents more than just an upgrade in hardware; it is a strategic investment in France’s ability to project power, safeguard maritime routes, and contribute to international security. With their advanced systems, modular design, and multi-role capabilities, these ships are well-suited to the challenges of modern naval warfare.

By 2026, when Amiral Ronarc'h becomes fully operational, the French Navy will have at its disposal a state-of-the-art platform capable of defending national interests and supporting allied operations worldwide. The FDI program also strengthens France’s naval industry, ensuring technological leadership and export opportunities in a competitive global market.

The commissioning of the first FDI frigate marks a turning point for the French Navy. Combining advanced technology, modularity, and combat versatility, the FDI-class is set to become a cornerstone of France’s maritime defense strategy. As additional units join the fleet and international partners adopt the design, the FDI will stand as a symbol of innovation, resilience, and strategic foresight in naval warfare.

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