Their secondary armament consisted of sixteen 50-calibre BL four-inch (102 mm) Mark VII guns. These guns were installed in unshielded single mounts in the superstructure. The guns had a maximum elevation of +15° which gave them a range of . They fired projectiles at a muzzle velocity of . They were provided with 150 rounds per gun. Four 3-pounder () saluting guns were also carried. The ships were equipped with three 21-inch submerged torpedo tubes, one on each broadside and another in the stern, for which 18 torpedoes were provided.