NAVYPEDIA

Photo

Georges Leygues 1979

Ships

Name	No	Builder	Laid down	Launched	Comp	Fate
Georges Leygues	D640	Arsenal de Brest	16.9.1974	17.12.1976	10.12.1979	decommissioned 9.2013, stricken 3.2014
Dupleix	D641	Arsenal de Brest	17.10.1975	2.12.1978	13.6.1981	decommissioned 6.2014, scuttled 6.2016
Montcalm	D642	Arsenal de Brest	5.12.1975	31.5.1980	28.5.1982	stricken 7.2017
Jean de Vienne	D643	Arsenal de Brest	26.10.1979	17.11.1981	25.5.1984	stricken 6.2018
Primauguet	D644	Arsenal de Brest	17.11.1981	17.3.1984	5.11.1986	stricken 4.2019
La Motte-Picquet	D645	Arsenal de Brest	12.2.1982	6.2.1985	18.2.1988	in service (2019)
Latouche-Tréville	D646	Arsenal de Brest	15.2.1984	19.3.1988	16.7.1990	in service (2019)

Technical data

Displacement standard, t	D640: 3550 D641-643: 3831 D644-646: 3680
Displacement full, t	D640: 4350 D641-643: 4500 D644-646: 4580
Length, m	129.0 pp 139.0 oa
Breadth, m	14.0
Draught, m	5.50 hull 5.80-5.86 propellers
No of shafts	2
Machinery	CODOG: 2 Rolls-Royce Olympus TM-3B gas turbines / 2 SEMT-Pielstick 16PA6C V280 diesels
Power, h. p.	52000 / 10720
Max speed, kts	30
Fuel, t	distillate fuel 600t
Endurance, nm(kts)	10000(15)
Armament	D640, 641: 4 x 1 MM38 Exocet SSM (4 MM38), 1 x 8 Crotale SAM (26 Crotale), 1 x 1 - 100/55 Mod. 1968 CADAM, 2 x 1 - 20/70 Mk 10 Mod. 23, 2 x 1 - 12.7/90, 2 - 550 KD-59E torpedo catapults (10 L5 Mod. 4), 2 helicopters (Lynx) D642: 2 x 4 MM40 Exocet SSM (8 MM40), 1 x 8 Crotale SAM (26 Crotale), 1 x 1 - 100/55 Mod. 1968 CADAM, 2 x 1 - 20/70 Mk 10 Mod. 23, 2 x 1 - 12.7/90, 2 - 550 KD-59E torpedo catapults (10 L5 Mod. 4), 2 helicopters (Lynx) D643: 4 x 2 MM40 Exocet SSM (8 MM40), 1 x 8 Crotale SAM (26 Crotale), 1 x 1 - 100/55 Mod. 1968 CADAM, 2 x 1 - 20/70 Mk 10 Mod. 23, 2 x 1 - 12.7/90, 2 - 550 KD-59E torpedo catapults (10 L5 Mod. 4), 2 helicopters (Lynx) D644-646: 2 x 4 MM40 Exocet SSM (8 MM40), 1 x 8 Crotale EDIR SAM (26 Crotale EDIR), 1 x 1 - 100/55 Mod. 1968 CADAM, 2 x 1 - 20/70 Mk 10 Mod. 23, 2 x 1 - 12.7/90, 2 - 550 KD-59E torpedo catapults (10 L5 Mod. 4), 2 helicopters (Lynx)
Electronic equipment	D640: 2x DRBN-32, DRBV-26, DRBV-51D, DRBC-32E radars, DUBV-23, DUBV-43B VDS, DSBV-62C towed sonars, ARBR-16, ARBB-32B, ARBX-10 ECM suites, 2x Syllex decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS D641: 2x DRBN-32, DRBV-26, DRBV-51C, DRBC-32E radars, DUBV-23, DUBV-43B VDS sonars, ARBR-16, ARBB-32B, ARBX-10 ECM suites, 2x Syllex decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS D642: 2x DRBN-32, DRBV-15A, DRBC-33A radars, DUBV-23, DUBV-43B VDS sonars, ARBR-17, ARBB-32B ECM suites, 2x Syllex decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS D643: 2x DRBN-32, DRBV-26, DRBV-51C, DRBC-32E radars, DUBV-23, DUBV-43C VDS sonars, ARBR-16, ARBB-32B, ARBX-10 ECM suites, 2x AMBL-1C Dagaie Mk 2 decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS D644: 2x DRBN-32, DRBV-15A, DRBC-33A radars, Panda DMA-B e/o director, DUBV-24C, DUBV-43C VDS, DSBV-61A towed sonars, ARBR-17, ARBB-32B, ARBG-1A Saigon ECM suites, 2x AMBL-1C Dagaie Mk 2 decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS D645, 646: 2x DRBN-32, DRBV-15A, DRBC-33A radars, Panda DMA-B, Piranha III IR E/O directors, DUBV-24C, DUBV-43C VDS, DSBV-61A towed sonars, ARBR-17, ARBB-32B, ARBG-1A Saigon ECM suites, 2x AMBL-1C Dagaie Mk 2 decoy RL, 2x Replica floating radar decoys, SLQ-25A Nixie towed torpedo decoy, SENIT-4 CCS
Complement	216

Standard scale images

Graphics

Project history

Prompted by the requirement to replace the destroyers of the T 47 and T 53 classes, the C 70 project aimed to provide a common hull and propulsion system for two distinct classes; one to provide ASW protection for the fleet, and the other to provide area air defence. In the event it proved difficult to achieve the degree of commonality desired, and the final designs share only a common hull.

Six ASW vessels were laid down before construction was begun on the first of the AAW ships. The destroyers of the Georges Leygues class incorporate many of the features of the F 67 type, but on a reduced displacement. They have adopted the full-width hangar and have identical helicopter handling facilities. They also carry the same outfit of sensors, although a SENIT 4 tactical data system, using more advanced computers and all-French components, superseded the SENIT 3 system of their predecessors. The reduction in length meant only a single 100mm gun mounting forward, and Malafon had to be abandoned because of the adoption of gas turbine main propulsion machinery, which required large air intakes and exhaust uptakes amidships.

The adoption of gas turbines was influenced by developments in the Royal Navy and the Royal Netherlands Navy. However, only the Olympus half of the Olympus/Tyne COGOG package adopted by the latter navies was acceptable, as it was felt that the Tyne lacked sufficient power for running astern, particularly in the tropics, and was also expensive to run at cruising speed. SEMT-Pielstick diesels were adopted instead, and coupled with the Olympus main turbines in a CODOG arrangement.

Modernizations

1996, Jean de Vienne, 1999, Dupleix: - 2 x 1 - 20/70, ARBB-32B ECM suite; + 2 x 6 Sadral SAM (39 Mistral), 2 x 1 - 30/70 OTOBreda-Mauser, DIBV-2A Vampir IR E/O suite, 2x DIBC-2A E/O directors, 2x ARBB-36A ECM suites

1990s, Georges Leygues, Dupleix, Montcalm: - 1 x 8 Crotale SAM, 2x Syllex decoy RL; + 1 x 8 Crotale EDIR SAM (26 Crotale EDIR), 2x AMBL-1C Dagaie Mk 2 decoy RL

1997, La Motte-Picquet; 1998, Primauguet, Latouche-Tréville: + 2 x 2 Simbad SAM (~16 Mistral), 2x ARBB-36 ECM suites

1999, Georges Leygues, La Motte-Picquet: - 2 Lynx helicopters (hangar was converted for training role); + 2 x 2 Simbad SAM (~16 Mistral)

2000, Montcalm: - 2 x 1 - 20/70, 2x Syllex decoy RL; + 2 x 6 Sadral SAM (39 Mistral), 2 x 1 - 30/70 OTOBreda-Mauser, 2x DIBC-2A E/O directors, 2x ARBB-36 ECM suites, 2x AMBL-1C Dagaie Mk 2 decoy RL

early 2000s, all: - 2x DRBN-32 radars; + 2x DRBN-34 radars

2002, Dupleix; 2003, Jean de Vienne: - DRBV-51C radar; + DRBV-15A radar

2002-2003, all: 60m bulges were installed, with 210t concrete, displacement rose by 330t, endurance was about 8000(15)nm.

2005, Georges Leygues, Dupleix, Montcalm, Jean de Vienne: + 4 x 1 - 12.7/90

2005, Primauguet, La Motte-Picquet, Latouche-Tréville: - 2 x 1 - 20/70, 2 - 550 torpedo catapults; + 2 x 1 - 20/90 F2, 4 x 1 - 12.7/90, 2 - 324 B515 TT (10 MU-90)

2007, Montcalm; 2008, Jean de Vienne: - DUBV-23 sonar; + UMS-4110 sonar

2012, Montcalm, Jean de Vienne: - 2 x 1 - 30/70; + 2 x 1 - 20/90 F2

Naval service

No significant events.