Her main armament consisted of two breech-loading (BL) Mk X guns in single gun turrets, one each fore and aft of the superstructure. They fired shells to a range of . Her secondary armament of twelve BL 6-inch Mk VII guns was arranged in casemates amidships. Eight of these were mounted on the main deck and were only usable in calm weather. They had a maximum range of approximately with their shells. A dozen quick-firing (QF) 12-pounder 12 cwt guns were fitted for defence against torpedo boats, eight on casemates on the upper deck and four in the superstructure. The ship also carried three 3-pounder Hotchkiss guns and two submerged 18-inch torpedo tubes.