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A Gustave Zédé-class submarine in the background behind the ex-German SMS U-139 in French service as Halbronn, Brest, France, February 1919
Class overview
Name	Gustave Zédé
Builders	Arsenal de Cherbourg
Operators	French Navy
Preceded by	Clorinde class
Succeeded by	Amphitrite class
Built	1911–16
In commission	1914–37
Completed	2
Scrapped	2
General characteristics (as built)
Type	Submarine
Displacement	820–849 t (807–836 long tons) (surfaced) 1,047–1,098 t (1,030–1,081 long tons) (submerged)
Length	74 m (242 ft 9 in) (o/a)
Beam	6 m (19 ft 8 in) (deep)
Draft	3.75 m (12 ft 4 in)
Installed power	1,640 PS (1,210 kW; 1,620 bhp) (electric motors) 3,500 PS (2,600 kW; 3,500 bhp) (Du Temple boilers) or 2,400 PS (1,800 kW; 2,400 bhp) (diesels)
Propulsion	2 × shafts; 2 × electric motors 2 × Diesel engines or 2 × triple-expansion steam engines
Speed	17 knots (31 km/h; 20 mph) (surfaced) 10–11 knots (19–20 km/h; 12–13 mph) (submerged)
Range	1,400–3,120 nmi (2,590–5,780 km; 1,610–3,590 mi) at 10 knots (19 km/h; 12 mph) (surfaced) 90–135 nmi (167–250 km; 104–155 mi) at 4–5 knots (7.4–9.3 km/h; 4.6–5.8 mph) (submerged)
Complement	47 officers and crewmen
Armament	2 × 450 mm (17.7 in) bow torpedo tubes 3 × twin external 450 mm torpedo launchers 1 × 75 mm (3 in) deck gun 1 × 47 mm (1.9 in) gun

The Gustave Zédé class was a pair of submarines built for the French Navy just before World War I.

See also

• List of submarines of France

Bibliography

• Couhat, Jean Labayle (1974). French Warships of World War I. London: Ian Allan. ISBN 0-7110-0445-5.
• Gardiner, Robert & Gray, Randal (1985). Conway's All The World's Fighting Ships 1906–1921. London: Conway Maritime Press. ISBN 0-85177-245-5.
• Garier, Gérard (2002). A l'épreuve de la Grande Guerre. L'odyssée technique et humaine du sous-marin en France (in French). Vol. 3–2. Bourg-en-Bresse, France: Marines édition. ISBN 2-909675-81-5.
• Garier, Gérard (2000). Des Clorinde (1912-1916) aux Diane (1912–1917). L'odyssée technique et humaine du sous-marin en France (in French). Vol. 3–1. Bourg-en-Bresse, France: Marines édition. ISBN 2-909675-54-8.
• Roche, Jean-Michel (2005). "Classement par types". Dictionnaire des bâtiments de la flotte de guerre française de Colbert à nos jours 2, 1870 - 2006. Toulon: Roche. ISBN 978-2-9525917-0-6. OCLC 165892922.

• World War I submarines of France
• Submarine classes
• Ship classes of the French Navy