FDI vs FREMM frigate
FDI vs FREMM frigate at a glance — displacement 4,460 vs 6,700 tons, length 122 vs 144 m, speed 27 vs 27 knots, crew 125 vs 145.
| FDI | FREMM frigate | |
|---|---|---|
| Origin | 🇫🇷 France | 🇫🇷 France |
| Category | Frigate | Frigate |
| Type | General-purpose frigate | Multi-purpose frigate |
| Manufacturer | Naval Group | Naval Group |
| Year introduced | 2025 | 2012 |
| Number built | 2 units | 22 units |
| Estimated unit price | $820 million | $795 million |
| Displacement | 4,460 tons | 6,700 tons |
| Maximum speed | 27.0 knots | 27.0 knots |
| Range | 5,000 nm at 15 knots | 6,800 nm at 15 knots |
| Length | 122.0 m | 144.6 m |
| Beam | 17.7 m | 20.0 m |
| Crew | 125 | 145 |
| FDI | FREMM frigate | |
|---|---|---|
| Armament |
|
|
| Propulsion | Combined diesel and diesel (CODAD) arrangement with a total output of 32,000 kW (43,000 shp) | CODLOG (France) or CODLAG (Italy): 1 × 32 MW General Electric/Avio LM2500+G4 gas turbine, 2 × 2.5 MW electric motors, 4 × diesel generators |
Detailed Comparison
The French Navy's surface fleet modernization relies on two primary platforms: the 6,700-ton FREMM and the 4,460-ton FDI. FREMM operates as a heavy, long-range asset integrating land-attack systems, while the FDI emerged to fulfill a 15-frigate requirement, replacing the La Fayette class. Both platforms are securing export contracts, reflecting European naval procurement shifts toward modular surface combatants.
Development and Design
FREMM originated as a Franco-Italian joint venture, generating 22 hulls since 2012. It captured export orders from Egypt, Morocco, Greece, and Portugal, though the US Navy canceled its FREMM-derived Constellation class in November 2025. The FDI, initiated in 2015, is a strictly French design by Naval Group. It utilizes a digital architecture to integrate area-air defense into a hull 2,240 tons lighter than FREMM. Greece ordered four FDI variants, and Sweden selected the platform for its four-ship Luleå class in May 2026.
Weapons and Sensors
FDI integrates the Thales SEA FIRE fully digital fixed-panel AESA radar, providing faster track-initiation against low-observable targets than FREMM's rotating radar arrays. However, FREMM holds a kinetic advantage. French FREMMs carry 16 SYLVER A70 cells for MdCN land-attack cruise missiles alongside 16 A43/A50 cells for Aster surface-to-air missiles. FDI is restricted to 16 or 32 SYLVER A50 cells for Aster 15/30 and lacks an organic land-attack cruise missile capacity. Both classes carry eight anti-ship missiles and MU90 torpedoes.
Propulsion and Performance
The FDI utilizes a Combined Diesel and Diesel (CODAD) propulsion system generating 32,000 kW, yielding a 5,000 nm range at 15 knots. FREMM employs a CODLOG (France) or CODLAG (Italy) architecture, combining gas turbines and electric motors to reduce acoustic signature during anti-submarine warfare (ASW).
- FREMM outranges FDI by 1,800 nm
- FREMM supports heavier ASW helicopters, such as the AW101 in Italian service
- FDI operates with a smaller crew of 125, compared to FREMM's 145
Deployment and Combat Record
FREMM units have executed combat operations since the April 2018 strikes in Syria, where French vessels launched MdCN cruise missiles. They routinely deploy for carrier strike group escort in the Mediterranean and Indo-Pacific. The FDI class entered combat operations shortly after delivery. During the 2026 Iran war, the Hellenic Navy deployed the lead ship, Kimon, alongside Hellenic Air Force F-16s to Cyprus, executing air defense missions against Iranian drone formations.
Conclusion
FREMM retains the edge in expeditionary strike and blue-water ASW. Its larger VLS capacity, acoustic-quieting CODLAG/CODLOG propulsion, and integration of MdCN cruise missiles make it the required asset for carrier escort and land-attack operations. The FDI holds the advantage in littoral air defense and cost-constrained fleet modernization. Its fixed-panel SEA FIRE radar provides higher target resolution against saturation drone attacks, and its smaller hull reduces operating costs while maintaining Aster-30 area-denial capabilities. Navies requiring offensive power projection will procure FREMM, while those prioritizing defensive anti-access/area denial will select FDI.