French submarine Espadon (1926)

The French submarine Espadon was a built for the French Navy in the mid-1920s. Laid down in October 1923, it was launched in May 1926 and commissioned in December 1927. It was disarmed at Bizerte, Tunisia in April 1941 and captured there by Italian forces on 8 December 1942 and renamed FR 114. It was scuttled by the Italians at the Castellamare shipyard on 13 September 1943, then raised by the Germans in 1943 but not repaired.

Design
78 m long, with a beam of 6.8 m and a draught of 5.1 m, Requin-class submarines could dive up to 80 m. The submarine had a surfaced displacement of 1150 t and a submerged displacement of 1441 t. Propulsion while surfaced was provided by two 2900 hp diesel motor built by the Swiss manufacturer Sulzer and two 1800 hp electric motors. The submarines' electrical propulsion allowed it to attain speeds of 9 kn while submerged and 15 kn on the surface. Their surfaced range was 7700 nmi at 9 kn, and 4000 nmi at 12 kn, with a submerged range of 70 nmi at 5 kn.