The ships' secondary armament consisted of twenty-two 138 mm Mle 1910 guns, mounted in casemates. The guns fired semi-armour-piercing shells at a muzzle velocity of . The guns could be elevated to 15°, which provided a maximum range of less than . They had a rate of fire of 5–6 rounds per minute and each gun provided with 275 rounds. The rearmost guns were very low and were often washed out in any kind of sea. The ships also carried four Modèle 1902 Hotchkiss guns, two on each beam. The "Courbet"-class ships were also armed with four submerged Modèle 1909 torpedo tubes for which they carried twelve torpedoes.