Their power plant consisted of three 4-cylinder triple-expansion engines powered by forty coal-fired Belleville boilers in Edgar Quinet and forty-two Niclausse boilers in Waldeck-Rousseau.
The Edgar Quinet-class ships were armed with a main battery of fourteen 50-caliber M1902 guns; four were in twin gun turrets forward and aft, with three single gun turrets on either broadside.