Constellation vs Moudge
Constellation vs Moudge at a glance — displacement 7,291 vs 1,500 tons, length 151 vs 95 m, speed 26 vs 30 knots, crew 200 vs 140.
| Constellation | Moudge | |
|---|---|---|
| Origin | 🇺🇸 United States | 🇮🇷 Iran |
| Category | Frigate | Frigate |
| Type | Guided-missile frigate | Frigate |
| Manufacturer | Fincantieri Marinette Marine | Iranian Navy's Factories |
| Year introduced | 2029 | 2010 |
| Number built | 2 units | 6 units |
| Estimated unit price | $1,280 million | NA |
| Displacement | 7,291 tons | 1,500 tons |
| Maximum speed | 26.0 knots | 30.0 knots |
| Range | 6,000 nm at 16 knots | NA |
| Length | 151.2 m | 95.0 m |
| Beam | 19.8 m | 11.1 m |
| Crew | 200 | 140 |
| Constellation | Moudge | |
|---|---|---|
| Armament |
|
|
| 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 | 2 × 10,000 hp (7,500 kW) engines, 4 × 740 hp (550 kW) diesel generators |
Detailed Comparison
The Iranian Moudge class and the United States Navy Constellation class occupy entirely different weight classes and doctrinal roles, despite sharing the frigate designation. The 1,500-ton Moudge functions as a localized coastal defense corvette built under heavy sanctions, while the 7,291-ton Constellation was designed as an Aegis-equipped blue-water escort before its abrupt program cancellation.
Development and Design
Iran developed the Moudge class domestically as a reverse-engineered successor to its British-built Alvand class. Managed by the Marine Industries Organization, the completed hulls suffered from systemic industrial quality control issues, evidenced by the capsizing of Talaiyeh (later Zagros) in dry dock and Sahand in port. Conversely, the US Navy based the Constellation on Fincantieri’s FREMM architecture to mitigate design risk following the Littoral Combat Ship program. Shipyard backlogs and labor shortages at Fincantieri Marinette Marine delayed construction. The Navy capped the class at two hulls in November 2025, pivoting to an FF(X) design based on the National Security Cutter.
Weapons and Sensors
The Constellation operates with a vastly larger sensor and kinetic baseline. Its combat system integrates Aegis Baseline 10 with the AN/SPY-6(V)3 radar and CAPTAS-4 variable-depth sonar. Armament centers on a 32-cell Mark 41 VLS accommodating:
- BGM-109 Tomahawk Cruise Missiles
- RIM-162 ESSM Block 2
- RIM-174 Standard ERAM
- RIM-66 Standard SM-2 Block 3C
Supplementing this are 16 canister-launched anti-ship missiles and a RAM launcher. The Moudge fields a minimal loadout: four Noor or Qader anti-ship missiles and four Sayyad-3 SAMs. Its 3D PESA radar lacks the processing architecture to track multiple saturated targets, and its ASW suite relies on short-range 324mm torpedoes and a dated Bell 214 helicopter, contrasting sharply with the US MH-60R Seahawk.
Propulsion and Performance
The Constellation utilizes a CODLAG arrangement to power an electric drive for quiet ASW operations, achieving 26 knots and a 6,000 nm range at 16 knots. The Moudge relies on a conventional diesel system to reach 30 knots. While the Iranian vessel has a marginal four-knot speed advantage for asymmetric littoral sprints, it lacks the endurance, payload capacity, and acoustic silencing required for sustained oceanic operations.
Deployment and Combat Record
The Moudge class operated primarily in the Persian Gulf and Caspian Sea before the 2026 Iran War. During Operation Epic Fury in March 2026, the class suffered total structural failure under fire. US airstrikes sank Jamaran, Sahand, and Zagros at their berths. Days later, the USS Charlotte sank Dena in the Indian Ocean with torpedoes—the first submarine torpedo kill since 1982. The Constellation class has no combat record; as of late 2025, the lead ship was 12 percent complete, with an anticipated 2029 commissioning.
Conclusion
The Constellation possesses a definitive structural and kinetic edge across all environments, functioning as an integrated node in a carrier strike group with deep magazines and advanced ASW capabilities. The Moudge is a fragile, localized surface combatant plagued by naval engineering deficiencies. The destruction of the active Iranian fleet during the 2026 conflict validates the Moudge's inability to survive against peer sensors and munitions. However, the American program’s failure to scale past two units limits its strategic footprint, forcing the US Navy back to the drawing board for a mass-producible surface combatant.