History
France
NameDe Grasse
NamesakeFrançois Joseph Paul de Grasse
BuilderArsenal de Lorient
Laid down1972
Launched30 November 1974
Commissioned25 October 1975
Decommissioned5 May 2013
In service1 October 1977
HomeportBrest
IdentificationD 612
StatusLaid up
General characteristics
Class and typeTourville-class frigate
Displacement4580 tonnes (6100 tonnes fully loaded)
Length152.75 m (501.1 ft)
Beam15.80 m (51.8 ft)
Draught6.60 m (21.7 ft)
Installed power
  • 4 multitubular boilers
  • 58,000 hp (43,000 kW)
Propulsion
  • 2 Rateau steam turbines, double reduction
  • Gazoil fuel
  • 2 fixed propellers
Speed32 knots (59 km/h; 37 mph)
Range
  • 1,900 nmi (3,500 km; 2,200 mi) at 30 knots (56 km/h; 35 mph)
  • 4,500 nmi (8,300 km; 5,200 mi) at 18 knots (33 km/h; 21 mph)
Complement
  • 24 officers
  • 160 non-commissioned officers
  • 115 men
Sensors and
processing systems
  • 1 DRBV 51B surface sentry radar
  • 1 DRBV 26A air sentry radar
  • 1 DRBC 32D targeting radar
  • 2 DRBN 34 navigation radars
  • 1 DUBV 23 hull sonar
  • 1 ETBF DSBV 62C sonar
  • 1 DSBX 1 tugged sonar
  • 1 Syva torpedo alert system
Electronic warfare
& decoys
  • 1 ARBB 32 jammer
  • 1 ARBR 16 radar interceptor
  • 2 Syllex decoy launchers
  • bubble belt
  • SENIT 3
  • SEAO/OPSMER
  • HF, UHF, VHF and SHF liaison systems
  • Syracuse 2
  • Inmarsat
  • Link 11
Armament
  • Anti-ship;
    • 6 × Exocet MM38 anti-ship missiles
  • Anti-submarine;
    • 2 × L5 torpedo launchers, 10 torpedoes on board (L5 mod 4)
  • Guns;
    • 2 × 100 mm turrets (1968 model)
    • 2 × 20 mm cannons
    • 4 × 12.7 mm machine guns
  • CIWS;
    • 1 × Crotale EDIR CIWS anti-air missiles (8 missiles on launcher, 16 in magazine)
Aircraft carried2 × Lynx WG13 anti-ship submarine

De Grasse is a F67 type large high-sea frigate of the French Marine Nationale specialised in anti-submarine warfare, though she also has anti-air and anti-surface capabilities. She is named after the 18th century admiral count François Joseph Paul de Grasse.

Service history

Between 1994 and 1996, De Grasse and her sister Tourville were refitted with the modern SLAMS anti-submarine system, an active Very Low Frequencies sonar.

In April 2006, De Grasse lost her towed sonar array during an exercise in heavy seas. The incident was reported by the Canard Enchaîné; an investigation was launched to ascertain responsibilities for the loss of the 3 million euro worth sonar array. Meanwhile, the spare sonar of the decommissioned Duguay-Trouin was fitted on De Grasse.

De Grasse was decommissioned on 5 May 2013 and is now moored in the Penfeld.

De Grasse (centre left) in a 5-country multinational fleet, during Operation Enduring Freedom in the Oman Sea.

Sources and references

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