Georges Leygues-class frigate

	Montcalm
Class overview
Name	Georges Leygues class
Builders	Arsenal de Brest
Operators	French Navy
Preceded by	Tourville class
Succeeded by	Aquitaine class (anti-submarine variant)
Built	1974–1988
In commission	1979 – 2022
Completed	7
Retired	7
General characteristics (as built)
Type	Frigate
Displacement	3,550 t (3,494 long tons); 4,500–4,580 t (4,429–4,508 long tons) full load;
Length	139 m (456 ft)
Beam	14 m (45 ft 11 in)
Draught	5.7 m (18 ft 8 in)
Propulsion	2 shafts; CODOG; 2 × gas turbines, 23,100 shp (23,420 PS; 17,226 kW) each; 2 × diesel engines, 6,400 PS (6,312 bhp; 4,707 kW) each;
Speed	30 knots (56 km/h; 35 mph)
Range	9,500 nmi (17,600 km; 10,900 mi) at 17 knots (31 km/h; 20 mph)
Sensors &; processing systems	DRBV 51C search radar; DRBV 26 early-warning radar; DRBC 32E fire-control radar; DUBV 23B hull-mounted sonar; DUBV 43B variable depth sonar;
Electronic warfare; & decoys	2 × Syllex chaff launchers
Armament	4 x single MM38 Exocet anti-ship missiles ; 2 × fixed torpedo tubes; 1 × single 100 mm (3.9 in) DP gun; 2 × single 20 mm (0.8 in) AA guns; 1 × octuple Crotale anti-air missile launcher;
Aircraft carried	2 × Westland Lynx helicopters
Aviation facilities	Double hangar

The Georges Leygues class (Type C70 AS or Type F70 AS) consisted of seven guided-missile destroyers built for the French Navy during the Cold War. They were multi-role ships due to their Exocet and Crotale missile armament, making them especially suitable for the defence of strategic positions, show of force operations, or as high seas escorts. The design was initially officially known as a "corvette" with the designation C70, but were internationally labelled an "anti-submarine destroyer" (hence the "D" in the hull numbers). Subsequently, the French referred to the ships as "frigates" with the designation F70.

Class overview
Montcalm
Name	Georges Leygues class
Builders	Arsenal de Brest
Operators	French Navy
Preceded by	Tourville class
Succeeded by	Aquitaine class (anti-submarine variant)
Built	1974–1988
In commission	1979 – 2022
Completed	7
Retired	7
General characteristics (as built)
Type	Frigate
Displacement	3,550 t (3,494 long tons) 4,500–4,580 t (4,429–4,508 long tons) full load
Length	139 m (456 ft)
Beam	14 m (45 ft 11 in)
Draught	5.7 m (18 ft 8 in)
Propulsion	2 shafts; CODOG 2 × gas turbines, 23,100 shp (23,420 PS; 17,226 kW) each 2 × diesel engines, 6,400 PS (6,312 bhp; 4,707 kW) each
Speed	30 knots (56 km/h; 35 mph)
Range	9,500 nmi (17,600 km; 10,900 mi) at 17 knots (31 km/h; 20 mph)
Sensors & processing systems	DRBV 51C search radar DRBV 26 early-warning radar DRBC 32E fire-control radar DUBV 23B hull-mounted sonar DUBV 43B variable depth sonar
Electronic warfare & decoys	2 × Syllex chaff launchers
Armament	4 x single MM38 Exocet anti-ship missiles 2 × fixed torpedo tubes 1 × single 100 mm (3.9 in) DP gun 2 × single 20 mm (0.8 in) AA guns 1 × octuple Crotale anti-air missile launcher
Aircraft carried	2 × Westland Lynx helicopters
Aviation facilities	Double hangar