The Danton-class ships had four license-built Parsons direct-drive steam turbines, each of which drove a single propeller, using steam from 26 coal-fired Belleville or Niclausse boilers.
Each boiler type was installed on three ships of the class.
The boilers were housed in two large compartments, 17 in the forward boiler room that used the three forward funnels and 9 in the aft boiler which exhausted through the rear pair of funnels.
The turbines were amidships, between the boiler rooms, in three compartments.
The center engine room housed the turbines for the two center propeller shafts and the turbine for each of the outer shafts had their own compartment flanking the center engine room.
The turbines were rated at a total of 22,500 shaft horsepower (16,800 kW) using steam provided by the boilers at a working pressure of 18 kg/cm² (1,765 kPa; 256 psi).
Designed for a maximum speed of 19.25 knots (35.65 km/h; 22.15 mph), they handily exceeded that during their sea trials with speeds ranging from 19.7 to 20.66 knots (36.5 to 38.3 km/h; 22.7 to 23.8 mph).

The Niclausse boilers were not well suited for use with turbines and burned more coal than the Belleville boilers.
They also produced copious amounts of smoke and sparks; occasionally even flames from incomplete combustion of the coal.
The Dantons carried a maximum of 2,027 tonnes (1,995 long tons) of coal which gave them an estimated range from 3,120–4,866 nautical miles (5,778–9,012 km; 3,590–5,600 mi) at a speed of 12 knots (22 km/h; 14 mph), depending on which boilers were fitted.
Their endurance was almost half that of their predecessors due to the uneconomical fuel consumption of their turbines at low speeds and meant that they needed frequent coaling stops during the war.
The Danton-class ships had four license-built Parsons direct-drive steam turbines, each of which drove a single propeller, using steam from 26 coal-fired Belleville or Niclausse boilers. Each boiler type was installed on three ships of the class. The boilers were housed in two large compartments, 17 in the forward boiler room that used the three forward funnels and 9 in the aft boiler which exhausted through the rear pair of funnels. The turbines were amidships, between the boiler rooms, in three compartments. The center engine room housed the turbines for the two center propeller shafts and the turbine for each of the outer shafts had their own compartment flanking the center engine room. The turbines were rated at a total of 22,500 shaft horsepower (16,800 kW) using steam provided by the boilers at a working pressure of 18 kg/cm² (1,765 kPa; 256 psi). Designed for a maximum speed of 19.25 knots (35.65 km/h; 22.15 mph), they handily exceeded that during their sea trials with speeds ranging from 19.7 to 20.66 knots (36.5 to 38.3 km/h; 22.7 to 23.8 mph).
The Niclausse boilers were not well suited for use with turbines and burned more coal than the Belleville boilers. They also produced copious amounts of smoke and sparks; occasionally even flames from incomplete combustion of the coal. The Dantons carried a maximum of 2,027 tonnes (1,995 long tons) of coal which gave them an estimated range from 3,120–4,866 nautical miles (5,778–9,012 km; 3,590–5,600 mi) at a speed of 12 knots (22 km/h; 14 mph), depending on which boilers were fitted. Their endurance was almost half that of their predecessors due to the uneconomical fuel consumption of their turbines at low speeds and meant that they needed frequent coaling stops during the war.
Danton-class battleship