Français (Q11) was one of two s built for the French Navy at the beginning of the 20th century.
Design and description The Français-class submarines were copies of the , except built in steel rather than earlier boat's bronze alloy. The boats displaced on the surface and submerged. They had an overall length of , a beam of , and a draft of . The crew of the submarines numbered 2 officers and 11 enlisted men. The boats were powered by a pair of Sautter-Harlé electric motors designed to provide a total of , both driving the single propeller shaft that was fitted with a variable-pitch propeller. They were designed to reach a maximum speed of on the surface and underwater. During her sea trials on 26 March 1901, Français reached a speed of on the surface from . The Français class had a surface endurance of at and a submerged endurance of at .Roberts, p. 423
The boats were armed with torpedoes. They had an internal torpedo tube in the bow and two external torpedo launchers positioned on the hull forward of the conning tower.
Construction and career Français was ordered on 8 April 1899 and was laid down later that year at the Arsenal de Cherbourg. She was launched on 29 January 1901 and was commissioned on 1 June 1902.
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