Surcouf was the largest French submarine cruiser built. She served in both the French Navy and the Free French Naval Forces during the Second World War. She was lost during the night of 18/19 February 1942 in the Caribbean Sea, possibly after colliding with an American freighter. Surcouf was named after the French privateer Robert Surcouf. She was the largest submarine built until surpassed by the fit Japanese I-400-class submarine in 1943 Name: Surcouf Namesake: Robert Surcouf Ordered: 4 August 1926 Builder: Cherbourg Aenal Laid down: 1 July 1927 Launched: 18 November 1929 Commissioned: 16 April 1934 In service: 1934–1942 Refit: 1941 Identification: Pennant number: N N 3 Hono and awards: Resistance Medal with rosette Fate: disappeared, 18 February 1942 General characteristics Type: Cruiser submarine Displacement: 3,250 long to (3,300 t) (surfaced) 4,304 long to (4,373 t) (submerged) 2,880 long to (2,930 t) (dead) Length: 110 m (361 ft) Beam: 9 m (29 ft 6 in) Draft: 7.25 m (23 ft 9 in) Italled power: 7,600 hp (5,700 kW) (surfaced) 3,400 hp (2,500 kW) (submerged) Propulsion: 2 × Sulzer diesel engines (surfaced) 2 × electric moto (submerged) 2 × screws Speed: 18.5 knots (34.3 km/h; 21.3 mph) (surfaced) 10 kn (19 km/h; 12 mph) (submerged) Range: Surfaced: 18,500 km (10,000 nmi; 11,500 mi) at 10 kn (19 km/h; 12 mph) 12,600 km (6,800 nmi; 7,800 mi) at 13.5 kn (25.0 km/h; 15.5 mph) Submerged: 130 km (70 nmi; 81 mi) at 4.5 kn (8.3 km/h; 5.2 mph) 110 km (59 nmi; 68 mi) at 5 kn (9.3 km/h; 5.8 mph) Endurance: 90 days Test depth: 80 m (260 ft) Boats & landing craft carried: 2 × motorboats in watertight deck well Capacity: 280 long to (280 t) Complement: 8 office and 110 men Armament: 2 × 203 mm (8 in) gu (1 × 2) 2 × 37 mm (1.5 in) anti-aircraft gu (2 × 1) 4 × 13.2 mm (0.52 in) anti-aircraft machine gu (2 × 2) 8 × 550 mm (22 in) torpedo tubes 4 × 400 mm (16 in) torpedo tubes Aircraft carried: 1 × Besson MB.411 floatplane Aviation facilities: Hangar Desingt by: keltos01 / convert from silent hunter by: HatsuneR.