Léon Gambetta
The ships had three vertical triple-expansion steam engines, each driving one propeller shaft. Each of the sisters used a different type of water-tube boiler and "Léon Gambetta" was fitted with 28 Niclausse boilers. Their engines were rated at a total of to reach their designed maximum speed of ; during her sea trials on 22 April 1905, "Léon Gambetta" reached from . The cruisers carried enough coal to give them a range of at a speed of .