French submarine Korrigan

History
France
Name	Korrigan
Ordered	27 September 1899
Laid down	23 March 1900
Launched	24 January 1902
Commissioned	29 August 1902
Decommissioned	1906
Stricken	3 August 1910
Fate	Sold for scrap, 10 August 1911
General characteristics
Class & type	Farfadet-class submarine
Displacement	185  t (182 long tons) (surfaced) 202 t (199 long tons) (submerged)
Length	41.35 m (135 ft 8 in) (o/a)
Beam	2.9 m (9 ft 6 in)
Draught	2.7 m (8 ft 10 in)
Installed power	183  bhp (136  kW)
Propulsion	1 shaft; 2 electric motors
Speed	6.1 knots (11.3 km/h; 7.0 mph) (surfaced) 4.3 knots (8.0 km/h; 4.9 mph) (submerged)
Range	430  nmi (800 km; 490 mi) at 5 knots (9.3 km/h; 5.8 mph) (surfaced) 28 nmi (52 km; 32 mi) at 4.32 knots (8.00 km/h; 4.97 mph) (submerged)
Complement	14
Armament	4 × exterior 450 mm (17.7 in) torpedo launchers

Korrigan was one of four Farfadet-class submarines built for the French Navy at the beginning of the 20th century.

Design and description

Derived from the Morse by Gabriel Maugas, ^[1] the Farfadets were single-hulled, and powered by electric motors only, limiting their range and surface performance compared to the contemporary Sirène class. However they had variable-pitch propellers, developed by Maugas, obviating the need for a reversing engine. ^[2]

The boats displaced 185 metric tons (182 long tons ) on the surface and 202 metric tons (199 long tons) submerged. They had an overall length of 41.35 meters (135 ft 8 in), a beam of 2.9 meters (9 ft 6 in), and a draft of 2.7 meters (8 ft 10 in). The crew of all of the submarines numbered 2 officers and 12 enlisted men. The boats were powered by a pair of Sautter-Harlé electric motors providing a total of 300 metric horsepower (296  bhp ; 221  kW ), both driving the single propeller shaft. The boats were fitted with side-thrusting propellers (French : évoleurs) at the stern to assist in steering. They could reach a maximum speed of 6.1 knots (11.3 km/h; 7.0 mph) on the surface and 4.3 knots (8.0 km/h; 4.9 mph) underwater. The Farfadet class had a surface endurance of 430 nautical miles (800 km; 490 mi) at 5 knots (9.3 km/h; 5.8 mph) and a submerged endurance of 28 nmi (52 km; 32 mi) at 4.3 knots (8.0 km/h; 4.9 mph). ^[2]

The boats were armed with four external 450-millimeter (17.7 in) Tissier torpedo launchers, two aimed forward and two aimed to the rear. ^[2]

Construction and career

Korrigan was ordered on 27 September 1899 and was laid down on 23 April 1900 at Arsenal de Rochefort. She was launched on 24 January 1902 and was commissioned on 29 August. ^[2]

References

1. Staglini & Cosentino, p. 251
2. Roberts, p. 422

Bibliography

• Garier, Gérard (n.d.). L'odyssée technique et humaine du sous-marin en France[The Technical and Human Odyssey of the Submarine in France: From Plongeur (1863) to Guêpe (1904)] (in French). Vol. 1: Du Plongeur (1863) aux Guêpe (1904). 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. Seaforth Publishing. ISBN   978-1-5267-4533-0.
• Stanglini, Ruggero & Cosentino, Michelle (2022). The French Fleet: Ships, Strategy and Operations, 1870-1918. Seaforth Publishing. ISBN   978-1-5267-0131-2.