The ship was armed with eight 15 cm/45 41st Year Type guns, one each fore and aft, and three mounted in sponsons on each side of the hull. Ships of the "Chikuma"-class were unusual in having the same weapons for its side armament as for its main battery. These guns were supplemented by four QF 12-pounder 12 cwt naval guns and two 7.7 mm Lewis Guns. In addition, she carried three torpedo launchers with torpedoes. After 1919, two 8 cm/40 3rd Year Type naval gun were added for anti-aircraft defense abeam of the fourth funnel, replacing three of the 12-pounders.