Defence and intervention frigate

Amiral Ronarc'h, the first FDI of the French Navy, under construction (Lorient shipyard, 2022)
Class overview
NameFrégate de Défense et d'Intervention (FDI)
BuildersNaval Group
Operators
Preceded by
SubclassesKimon class
Cost
  • 2.1 billion (2017) (equivalent to 2.3 billion in 2022) for 5 units
  • 3.5 billion (2017) (equivalent to 3.9 billion in 2022) including development costs
Built2019–present
In service2025 (expected)
In commission2025 (expected)
Planned
  • 5 for the French Navy
  • 4 for the Hellenic Navy
Building6
Completed2
General characteristics
TypeGeneral-purpose frigate / destroyer
Displacement4.460 t (4.390 long tons)
Length122 m (400 ft 3 in)
Beam17.7 m (58 ft 1 in)
Propulsion
SpeedMaximum: 27 knots (50 km/h; 31 mph)
Range5,000 nmi (9,300 km; 5,800 mi) at 15 knots (28 km/h; 17 mph)
Endurance45 days
Complement125 (+ 28 passengers)
Sensors &
processing systems
  • Naval Group Setis® 3.0 Combat Management System
  • Thales SEA FIRE 4D AESA S-band multi-function radar
  • Thales KingKlip Mk2 hull-mounted sonar
  • Thales CAPTAS-4 Compact towed array sonar
  • Thales Aquilon digital communication system
  • Thales SURFSAT-L SATCOM terminal with Syracuse IV satellite link
  • Terma SCANTER X-band navigation radar
  • Wärtsilä NACOS X-band navigation radar
  • iXblue Marins inertial navigation system
  • iXblue Netans navigation data distribution system
  • Thales STIR 1.2 EO Mk2 medium- and long-range tracking radar system for gunfire control
  • Safran PASEO XLR extra long-range EO/IR and FCS system
  • Bertin Technologies 360° TV/IR camera surveillance system
  • Thales BlueGate E-scan IFF system
Electronic warfare
& decoys
  • Thales SENTINEL R-ESM system
  • Thales ALTESSE-H C-ESM system
  • Naval Group CMLS with CANTO anti-torpedo decoys
Armament
Aircraft carried

The Frégate de Défense et d'Intervention (English: Defence and Intervention Frigate) or FDI, formerly denominated Frégate de Taille Intermédiaire (English: Medium-Size Frigate) or FTI, is a programme launched in 2015 to produce a new class of first-rank French frigates to complement the Aquitaine-class. As of February 2022, five ships have been ordered for the French Navy and will form the Amiral Ronarc'h class, with the lead ship expected to be commissioned in 2025. In 2021, three units were ordered by Greece for the Hellenic Navy and will form the Kimon-class.

Amiral Ronarc'h, the lead ship of the class, was laid down on 17 December 2021. Commissioning of the warship had been planned from 2024 onwards but it was reported that delays in the fitting out and sea trials would push it as well as its entry into service to 2025.