French submarine Loutre

Sister ship Thon
History
France
Name	Loutre
Ordered	3 April 1901
Builder	Arsenal de Rochefort
Laid down	8 December 1902
Launched	22 August 1903
Commissioned	6 August 1904
Stricken	21 May 1914
Fate	Sold for scrap, 1920
General characteristics
Class and type	Naïade-class submarine
Displacement	70.5  t (69.4 long tons), (surfaced) 73.6 t (72.4 long tons) (submerged)
Length	24 m (78 ft 9 in)
Beam	2.26 m (7 ft 5 in)
Draft	2.54 m (8 ft 4 in)
Installed power	65  PS (64  bhp; 48  kW) (petrol engine) 70 PS (69 bhp; 51 kW) (electric motor)
Propulsion	1 × shaft; 1 × petrol engine 1 × electric motor
Speed	7.2 knots (13.3 km/h; 8.3 mph) (surfaced) 6 kn (11 km/h; 6.9 mph) (submerged)
Range	200  nmi (370 km; 230 mi) at 5.5 knots (10.2 km/h; 6.3 mph) (surfaced) 30 nmi (56 km; 35 mi) at 4.1 kn (7.6 km/h; 4.7 mph) (submerged)
Test depth	30 m (98 ft)
Complement	9
Armament	2 × single 450 mm (17.7 in) torpedoes in Drzewiecki drop collars

Loutre was one of 20 Naïade-class submarines built for the French Navy at the beginning of the 20th century. She was of the Romazotti type, and remained in service until just prior to the outbreak of World War I in 1914.

References

• Garier, Gérard (n.d.). Du Plongeur (1863) aux Guêpe (1904)[From Plongeur (1863) to Guêpe (1904)]. L'odyssée technique et humaine du sous-marin en France (in French). Vol. 1. Bourg-en-Bresse, France: Marines édition. ISBN   2-909675-19-X.
• Roberts, Stephen S. (2021). French Warships in the Age of Steam 1859–1914: Design, Construction, Careers and Fates. Barnsley, UK: Seaforth Publishing. ISBN   978-1-5267-4533-0.
• Smigielski, Adam (1985). "France". In Gray, Randal (ed.). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. pp. 190–220. ISBN   0-87021-907-3.