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 their side armament as for their main battery. These gun 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.