The "Le Hardi"-class ships were powered by two geared steam turbines, each driving a single three-bladed propeller, using steam provided by four Sural-Penhöet forced-circulation boilers that operated at a pressure of and a temperature of . The turbines were designed to produce intended to give the ships a speed of . "Le Hardi", the only ship of the class to run sea trials, comfortably exceeded that speed during her trials on 6 November 1939, reaching a maximum speed of from . The "Le Hardi" class carried of fuel oil which gave them a range of at .