French submarine Caïman

The French submarine Caïman was a built for the French Navy in the mid-1920s. Laid down in August 1924, it was launched in March 1927 and commissioned in February 1928. On 9 June, Caïman narrowly missed the British light cruiser HMS Ajax (22) off Syria. It was scuttled at Toulon on 27 November 1942 to prevent her capture by the Germans, then raised in February 1943. It was sunk again on 11 March 1944 by Allied aircraft.

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.