French submarine Sfax

Sfax

Sfax′s sister ship Ajax in 1930.
History
France
Name	Sfax
Namesake	Sfax, a city in Tunisia
Operator	French Navy
Ordered	1930
Builder	Ateliers et Chantiers de la Loire, Saint-Nazaire, France
Laid down	28 July 1931
Launched	6 December 1934
Commissioned	7 September 1936
Homeport	Brest, France
Fate	Sunk 19 December 1940
General characteristics [1]
Class and type	Redoutable-class submarine
Displacement	1,384 long tons (1,406 t) standard 1,570 long tons (1,595 t) normal 2,084 long tons (2,117 t) submerged
Length	92.30 m (302 ft 10 in) oa 92.00 m (301 ft 10 in) pp
Beam	8.20 m (26 ft 11 in)
Draught	4.70 m (15 ft 5 in)
Propulsion	2 diesel engines, 8,000 shp (5,966 kW) 2 electric motors, 2,000 shp (1,491 kW)
Speed	20 knots (37 km/h; 23 mph) (surfaced) 10 knots (19 km/h; 12 mph) (submerged)
Range	10,000 nmi (19,000 km; 12,000 mi) at 10 kn (19 km/h; 12 mph) 4,000 nmi (7,400 km; 4,600 mi) at 17 kn (31 km/h; 20 mph) 100 nmi (190 km; 120 mi) at 5 kn (9 km/h; 6 mph) submerged
Complement	61
Armament	4 × fixed 550 mm (21.7 in) torpedo tubes in bow, 5 × 550 mm (21.7 in) and 2 × 400 mm (15.7 in) torpedo tubes on external mounts 1 × 100 mm (3.9 in) gun 1 × 13.2 mm machine gun

Sfax was a French Navy Redoutable-class submarine of the M6 series commissioned in 1936. She participated in World War II, first on the side of the Allies from 1939 to June 1940 and then in the navy of Vichy France until a German submarine mistook her for an Allied submarine and sank her in December 1940.