Naval Systems

Amiral Ronarc'h-class frigate

Also known as
  • FDI
  • Frégate de défense et d'intervention
  • Amiral Ronarc'h class frigate

The Amiral Ronarc'h-class frigate is Naval Group's 4,500-ton FDI family, a French multi-role combat ship with digital and cyber-secure architecture. The lead ship is designed for anti-air, anti-surface, anti-submarine, and special-forces missions, began sea trials in 2024, and was delivered to the French Navy in October 2025.

Amiral Ronarc'h-class frigate, Multi-role frigate class, Naval Systems
Image source: Wikimedia Commons: French frigate Amiral Ronarc'h - 01.jpg

Role in Conflicts

2015 Various Conflicts
Side
Unconfirmed conflict context

No publicly documented use in a named armed conflict found in the sources reviewed. Public sources describe the first FDI frigate's delivery, sea trials, and long-duration deployment for capability validation before full operational service.

Profile / Specs

Profile

Origin
France
Built by
Naval Group
Type
Multi-role frigate class
Service note
2020s-present French FDI frigate class
Designed
2017-2019
Unit cost
About $858 million (2017 values)
Produced
2019-present
Number built
1 delivered; 4 more ordered for France

Specifications

Displacement
4,500 tons
Length
122 meters
Beam
18 meters
Speed
27 knots
Autonomy
45 days
Crew
125 + 28 passengers
Armament
16 Aster surface-to-air missiles, 8 Exocet MM40 Block 3c anti-ship missiles, MU90 torpedoes, 76 mm gun, 2 Narwhal 20 mm remote weapon stations, 4 torpedo tubes, and CANTO countermeasures
Air-Defense Missiles

Naval Group describes the FDI as strongly armed with Aster 15/30 anti-air missiles. This section links the class to the cataloged Aster 30 family entry that sits inside that documented missile fit.

Carried itemItem typeCarriage evidence
Aster 30 / Sea Viper air-defense missile, Surface-to-air interceptor missile, Air DefenseAster 30 / Sea Viper air-defense missilesurface-to-air missile

Naval Group's keel press release says the FDI is strongly armed with Aster 15/30 anti-air missiles, so the class is a documented carrier for the Aster family.

Sources: Naval Group: First FDI keel press release

Timeline

Amiral Ronarc'h-class frigate Key Events

  1. Keel laid and PSIM powered up

    Naval Group laid the keel of the first FDI frigate in Lorient and powered up the Panoramic Sensors and Intelligence Module, starting integration and combat-system testing on the lead ship.

    Sources: Naval Group: First FDI keel press release

  2. First sea trials begin

    Naval Group said Amiral Ronarc'h had begun its first sea trials from Lorient, where crews tested the ship's systems and combat equipment in real conditions at sea.

    Sources: Naval Group: FDI Amiral Ronarc'h begins sea trials

  3. Delivered to the French Navy

    Naval Group delivered the lead FDI frigate to Brest, after which the ship entered an operational-trials phase before active service.

    Sources: Naval Group: Naval Group delivers the first defence and intervention frigate

  4. Long-duration deployment begins

    Naval News reported that Amiral Ronarc'h set sail on a long-duration deployment, underscoring the class's intended use for distant operations and capability validation.

    Sources: Naval News: First French FDI frigate begins long duration deployment

Program Milestones

Naval Group's program papers show the FDI moving from contract award to assembly and then to combat-system work on a short, well-documented schedule.

DateMilestoneReader note
2017-04-20Framework agreement enters into forceBegins the French FDI program under the DGA contract.
2019Design approved and first steel cutMoves the lead ship from design work into production at Lorient.
2021-12-16Keel laid and PSIM powered upMarks assembly of the lead ship and the start of combat-system testing.

Sources: Naval Group: Financial report 2019; Naval Group: First FDI keel press release.

Media

Amiral Ronarc'h-class frigate Videos

Amiral Ronarc'h-class frigate Images

Amiral Ronarc'h-class frigate, Multi-role frigate class, Naval Systems - view 1
Source: Wikimedia Commons: French frigate Amiral Ronarc'h - 03.jpg
Amiral Ronarc'h-class frigate, Multi-role frigate class, Naval Systems - view 2
Source: Wikimedia Commons: French frigate Amiral Ronarc'h - 08.jpg
Related Weapon Systems
Bremen class / F122 frigate, Guided-missile frigate class, Naval SystemsNaval SystemsBremen class / F122 frigateGuided-missile frigate classThe Bremen class / F122 frigate was an eight-ship German Navy frigate class built from 1979 to 1990 and retained in service until Lübeck decommissioned in 2022. Designed around anti-submarine escort work with Sea Lynx helicopters, CODOG propulsion, Harpoon anti-ship missiles, Sea Sparrow air defense, torpedo tubes, and later RAM close-defense launchers, the class also appears in the anti-ISIS record through Augsburg's Operation Counter Daesh carrier-escort deployments.
La Fayette class frigate, Multipurpose stealth frigate class, Naval SystemsNaval SystemsLa Fayette class frigateMultipurpose stealth frigate classThe La Fayette class is France's five-ship FLF stealth-frigate family, developed and built at DCN's Lorient yard for reduced signatures, long-range patrol, escort, crisis-response, and maritime-surveillance missions. The French ships introduced a 125-meter, 3,600-tonne design with Exocet missiles, a helicopter hangar, and a small crew, while source-backed operations include Libya 2011 naval gunfire and EU NAVFOR counter-piracy patrols.

Sources

Naval Group: Defence and Intervention Frigate (FDI)Publisher: Naval Group | Note: Supports class background, the French Navy/Greek Navy production context, digital and cyber-secure design, and baseline specifications. | Accessed: 2026-06-25Naval Group: FDI Amiral Ronarc'h begins sea trialsPublisher: Naval Group | Note: Supports Amiral Ronarc'h's first sea trials, at-sea combat-system testing, and the FDI mission set. | Accessed: 2026-06-25Naval Group: Naval Group delivers the first defence and intervention frigatePublisher: Naval Group | Note: Supports delivery to the French Navy, the operational-trials phase, and the lead ship's service timeline. | Accessed: 2026-06-25Naval Group: First FDI keel press releasePublisher: Naval Group | Note: Supports the lead ship's keel laying, the PSIM activation milestone, the Aster 15/30 anti-air missile fit, and the French-series build context. | Accessed: 2026-06-27Naval Group: Financial report 2019Publisher: Naval Group | Note: Supports the 2017 contract entry into force, the 2019 design approval and first sheet-cut milestone, and the start of production context. | Accessed: 2026-06-27Shephard Defence Insight: Admiral Ronarc'h Class (FDI)Publisher: Shephard Defence Insight | Note: Supports the reported program value and unit-cost estimate for the FDI class. | Accessed: 2026-06-27Naval News: First French FDI frigate begins long duration deploymentPublisher: Naval News | Note: Supports the lead ship's long-duration deployment and the class's intended use for distant deployments in crisis zones. | Accessed: 2026-06-25Wikimedia Commons: French frigate Amiral Ronarc'h - 01.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and CC BY-SA 4.0 licensing context for a photograph of Amiral Ronarc'h in New York during Atlantic deployment. | Accessed: 2026-06-25Wikimedia Commons: French frigate Amiral Ronarc'h - 03.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and CC BY-SA 4.0 licensing context for a second photograph of Amiral Ronarc'h in New York during Atlantic deployment. | Accessed: 2026-06-25Wikimedia Commons: French frigate Amiral Ronarc'h - 08.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and CC BY-SA 4.0 licensing context for a third photograph of Amiral Ronarc'h in New York during Atlantic deployment. | Accessed: 2026-06-25