Constellation vs FREMM frigate
Constellation vs FREMM frigate at a glance — displacement 7,291 vs 6,700 tons, length 151 vs 144 m, speed 26 vs 27 knots, crew 200 vs 145.
| Constellation | FREMM frigate | |
|---|---|---|
| Origin | 🇺🇸 United States | 🇫🇷 France |
| Category | Frigate | Frigate |
| Type | Guided-missile frigate | Multi-purpose frigate |
| Manufacturer | Fincantieri Marinette Marine | Naval Group |
| Year introduced | 2029 | 2012 |
| Number built | 2 units | 22 units |
| Estimated unit price | $1,280 million | $795 million |
| Displacement | 7,291 tons | 6,700 tons |
| Maximum speed | 26.0 knots | 27.0 knots |
| Range | 6,000 nm at 16 knots | 6,800 nm at 15 knots |
| Length | 151.2 m | 144.6 m |
| Beam | 19.8 m | 20.0 m |
| Crew | 200 | 145 |
| Constellation | FREMM frigate | |
|---|---|---|
| Armament |
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| Propulsion | CODLAG: 1 × General Electric LM2500+G4 gas turbine, 2 × electric propulsion motors (INDAR 2 x 3.4 MW), 4 × ship service diesel generators (Rolls-Royce MTU 20V 4000 M53B engine 3000 kW), 2 x fixed-pitch propellers, 1 × auxiliary propulsion unit | 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 Constellation-class guided-missile frigate is a United States Navy derivative of the European FREMM (Frégate Européenne Multi-Mission) design. While the FREMM serves as a foundational platform for the French, Italian, Egyptian, and Moroccan navies with over 20 units built, the U.S. program was curtailed in November 2025. This analysis compares the parent European design against the modified American variant, specifically regarding hull modifications, weapon system integration, and operational parameters.
Development and Design
Naval Group and Fincantieri initiated the FREMM program to replace multiple Cold War-era classes, producing the French Aquitaine and Italian Bergamini variants. The design features a displacement of 6,700 tons and a length of 144.6 meters. In contrast, the Fincantieri Marinette Marine Constellation design lengthened the hull to 151.18 meters and increased displacement to 7,291 tons to accommodate U.S. Navy damage stability and survivability standards. While the FREMM remains in production with export orders to Greece and Indonesia, the Constellation program, initially planned for 20 vessels, was capped at two units (Constellation and Congress) following cancellation in late 2025.
Weapons and Sensors
The Constellation centers on the Aegis Baseline 10 combat system and AN/SPY-6(V)3 Enterprise Air Surveillance Radar. Its primary firepower resides in 32 Mark 41 VLS cells capable of deploying BGM-109 Tomahawk, RIM-162 ESSM, and RIM-174 Standard ERAM, supplemented by 16 canister-launched anti-ship missiles and a Mk 110 57mm gun. FREMM configurations vary by operator; French hulls utilize Sylver A43/A50/A70 vertical launchers for Aster air defense and MdCN cruise missiles, while Italian ships integrate 127mm Vulcano guns and Teseo anti-ship missiles. Both classes employ the Thales CAPTAS-4 variable-depth sonar for anti-submarine warfare.
Propulsion and Performance
Both classes utilize combined diesel-electric and gas (CODLAG/CODLOG) arrangements featuring General Electric LM2500-series gas turbines. The FREMM achieves a top speed of 30 knots and a range of 6,800 nautical miles at 15 knots. The heavier Constellation demonstrates reduced kinematic performance, with a maximum speed of 26 knots and a range of 6,000 nautical miles. Additionally, the U.S. variant requires a crew of 200, a 38% increase over the automated FREMM requirement of 145 personnel.
Deployment and Combat Record
The FREMM class entered service in 2012, seeing active deployment with French and Italian navies and exports to Egypt and Morocco. Operations include carrier strike group integration and independent patrols in the Mediterranean and Red Sea. Conversely, the Constellation remains under construction. As of late 2025, the lead ship was 12 percent complete at the Marinette, Wisconsin shipyard, with commissioning scheduled for 2029.
Conclusion
The FREMM represents a mature, widely exported platform offering higher speeds and reduced manning requirements. The Constellation adaptation modified the airframe for U.S. systems and survivability standards, resulting in increased displacement, reduced speed, and a larger crew complement. The cancellation of the U.S. program after two hulls indicates that the modified design failed to meet strategic cost or production timelines compared to the parent class's serial production.