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FDI vs Sigma

FDI vs Sigma at a glance — displacement 4,460 vs 1,692 tons, length 122 vs 90 m, speed 27 vs 28 knots, crew 125 vs 80.

Specifications
FDI Sigma
Origin 🇫🇷 France 🇳🇱 Netherlands
Category Frigate Frigate
Type General-purpose frigate Multi-purpose corvette / frigate
Manufacturer Naval Group Damen Schelde Naval Shipbuilding
Year introduced 2025 2007
Number built 2 units 10 units
Estimated unit price $820 million $222 million
Displacement 4,460 tons 1,692 tons
Maximum speed 27.0 knots 28.0 knots
Range 5,000 nm at 15 knots 4,800 nm at 14 knots
Length 122.0 m 90.7 m
Beam 17.7 m 13.0 m
Crew 125 80
Performance Radar Chart
Armament & Systems
FDI Sigma
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
  • 1 × Oto Melara 76 mm gun
  • 2 × 20 mm Denel GI-2 gun
  • 2 × quad (8) Mistral TETRAL Anti-air missile
  • 4 × Exocet MM40 Block II/MM40 Block III anti-surface missile
  • 2 × B515/3 triple launchers for lightweight WASS A244-S mod.3 / EuroTorp MU 90 torpedoes
Propulsion Combined diesel and diesel (CODAD) arrangement with a total output of 32,000 kW (43,000 shp) 2 × SEMT Pielstick 20PA6B STC rated at 8910 kW each driving a lightweight Geislinger coupling; 4 × Caterpillar 3406C TA generator rated at 350 kW each; 1 × Caterpillar 3304B emergency generator rated at 105 kW; 2 × shaft with Rolls-Royce Kamewa 5 bladed controllable pitch propeller
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Frequently Asked Questions

Which has greater displacement, the FDI-class or Sigma-class?
The FDI-class has greater displacement at 4,460 tons compared to the Sigma-class's 1,692 tons.
Which is faster, the FDI-class or Sigma-class?
The Sigma-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 Sigma-class?
The FDI-class has a longer range at 5,000 nautical miles compared to the Sigma-class's 4,800 nautical miles.
Which is longer, the FDI-class or Sigma-class?
The FDI-class is longer at 122.0 meters compared to the Sigma-class's 90.7 meters.
How many crew members do the FDI-class and Sigma-class have?
The FDI-class has a larger crew complement of 125 compared to the Sigma-class's 80 crew members.
Which is more expensive, the FDI-class or Sigma-class?
The FDI-class is more expensive at approximately $820 million per unit compared to the Sigma-class at $222 million.
Which has been built in greater numbers, the FDI-class or Sigma-class?
The Sigma-class has been built in greater numbers with 10 vessels compared to 2 vessels of the FDI-class.