D'Estienne d'Orves-class aviso

The aviso Lieutenant de vaisseau Lavallée
Class overview
NameD'Estienne d'Orves class or A69 type
Operators
Preceded byCommandant Rivière class
Succeeded by
Subclasses
Completed17
Active10
Retired7
General characteristics
TypeAviso
Displacement
  • 1,100 t (1,100 long tons) standard
  • 1,270 t (1,250 long tons) full load
Length
  • 80 m (262 ft 6 in) oa
  • 76 m (249 ft 4 in) pp
Beam10.3 m (33 ft 10 in)
Draught
  • 5.3 m (17 ft 5 in)
  • 3 m (9 ft 10 in)[1]
Propulsion
Speed23.5 knots (43.5 km/h; 27.0 mph)
Range4,500 nmi (8,300 km; 5,200 mi) at 15 knots (28 km/h; 17 mph)
Complement90
Sensors and
processing systems
  • 1 Air/surface DRBV 51A sentry radar
  • 1 DRBC 32E fire control radar
  • 1 Decca 1226 navigation radar
  • 1 DUBA 25 hull sonar (removed from French vessels when reclassified as OPVs)[2]
Electronic warfare
& decoys
  • 1 ARBR 16 radar interceptor
  • 2 Dagaie decoy launchers
  • 1 SLQ-25 Nixie countermeasure system
Armament

The D'Estienne d'Orves-class avisos, also known as the A69 type avisos, is a class of French Navy avisos, comparable in size to a light corvette, mainly designed for coastal anti-submarine defence, but are also available for high sea escort missions, notably in support missions with the Strategic Oceanic Force (FOST). Built on a simple and robust design, they have an economical and reliable propulsion system which allows them to be used for overseas presence missions. In addition to service in France, they have been ordered by the South African Navy (not delivered), Argentinian Navy and Turkish Navy.

The class takes its name from the lead ship, named in honour of Honoré d'Estienne d'Orves, a French naval officer and member of the French Resistance.

  1. ^ Gardiner & Friedman 1983, p. 41.
  2. ^ a b c d "Patrouilleurs: Les avisos français sur tous les fronts" [Patrol ships: French Avisos on all fronts.]. asafrance.fr (in French). 26 January 2017. Retrieved 6 June 2020.