French submarine Émeraude (S604)

Career (France)
Namesake: Emerald
Laid down: October 1982
Launched: 12 April 1986
Commissioned: 15 September 1988
Homeport: Toulon
Fate: In active service
General characteristics
Class and type:Rubis class submarine
Displacement:2600 t (2400 t surfaced)
Length:73.6 m (241 ft)
Beam:7.6 m (25 ft)
Draught:6.4 m (21 ft)
Propulsion:Pressurised water K48 nuclear reactor (48 MW) ; 2 turbo-alternators ; 1 electric engine (7 MW); one propeller
1 diesel-alternators SEMT Pielstick 8 PA 4V 185 SM; one auxiliary engine, 5 MW.
Speed:over 25 knots (46 km/h; 29 mph)
Range:8,500 nautical miles (15,700 km; 9,800 mi)
Test depth:over 300 m
Complement:10 officers

52 warrant officers

8 petty officers
Sensors and
processing systems:
DMUX 20 multifonction

ETBF DSUV 62C tugged antenna
DSUV 22 microphone system

DRUA 33 radar
Electronic warfare
and decoys:
ARUR 13
Armament:[1]

4 × 533mm tubes.

  • total mixed load of 14;
    • F17 mod2 torpedoes
    • 14 Exocet SM39
  • Mines

The Émeraude is a nuclear submarine from the first generation of attack submarines by the French Navy.

She is the fourth of the Rubis series. Between May 1994 and December 1995, she undertook a major refitting which upgraded her to the level of the Améthyste.

On 30 March 1994, an accidental explosion occurred in the engine compartment while the boat was engaged in an anti-submarine exercise, killing ten men who were examining the turbo-alternator room.

In June 2009, the Émeraude was sent to the mid Atlantic to aid in the search for the flight data recorder and cockpit voice recorder from the ill-fated Air France Flight 447.[2]

Notes and references