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FDI vs Type 31

FDI vs Type 31 at a glance — displacement 4,460 vs 5,700 tons, length 122 vs 138 m, speed 27 vs 28 knots, crew 125 vs 110.

Specifications
FDI Type 31
Origin 🇫🇷 France 🇬🇧 United Kingdom
Category Frigate Frigate
Type General-purpose frigate General-purpose frigate
Manufacturer Naval Group Babcock International, Rosyth
Year introduced 2025 2027
Number built 2 units 5 units
Estimated unit price $820 million $340 million
Displacement 4,460 tons 5,700 tons
Maximum speed 27.0 knots 28.0 knots
Range 5,000 nm at 15 knots 9,000 nm at 18 knots
Length 122.0 m 138.7 m
Beam 17.7 m 19.8 m
Crew 125 110
Performance Radar Chart
Armament & Systems
FDI Type 31
Armament
  • 1 × Oto Melara 76 mm Super Rapid gun
  • 2 × Nexter Narwhal 20B 20 mm RWS
  • 8 × Exocet MM-40 Block 3c anti-ship missiles
  • 2 × Sylver A50 8-cell VLS for 16 Aster 15 or 30 surface-to-air missiles
  • 2 × 2 Sadral Mistral Simbad-RC point-defence SAM
  • 2 × twin torpedo tubes for MU90 Impact torpedoes
  • 12+ × Sea Ceptor (CAMM) air-defence missiles
  • 1 × 57 mm Bofors Mk 110 gun
  • 2 × 40 mm Bofors Mk 4 guns
  • Fitted for Mk 41 VLS
Propulsion Combined diesel and diesel (CODAD) arrangement with a total output of 32,000 kW (43,000 shp) CODAD: 4 × MAN diesels, 2 shafts
Explore further
Largest operators · in service
Former operators · 5 built
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Frequently Asked Questions

Which has greater displacement, the FDI-class or Type 31-class?
The Type 31-class has greater displacement at 5,700 tons compared to the FDI-class's 4,460 tons.
Which is faster, the FDI-class or Type 31-class?
The Type 31-class is faster with a maximum speed of 28 knots compared to the FDI-class's 27 knots.
Which has longer range, the FDI-class or Type 31-class?
The Type 31-class has a longer range at 9,000 nautical miles compared to the FDI-class's 5,000 nautical miles.
Which is longer, the FDI-class or Type 31-class?
The Type 31-class is longer at 138.7 meters compared to the FDI-class's 122.0 meters.
How many crew members do the FDI-class and Type 31-class have?
The FDI-class has a larger crew complement of 125 compared to the Type 31-class's 110 crew members.
Which is more expensive, the FDI-class or Type 31-class?
The FDI-class is more expensive at approximately $820 million per unit compared to the Type 31-class at $340 million.
Which has been built in greater numbers, the FDI-class or Type 31-class?
The Type 31-class has been built in greater numbers with 5 vessels compared to 2 vessels of the FDI-class.