The "Revenge" class was equipped with eight breech-loading (BL) Mk I guns in four twin gun turrets, in two superfiring pairs fore and aft of the superstructure, designated 'A', 'B', 'X', and 'Y' from front to rear. Twelve of the fourteen BL Mk XII guns were mounted in casemates along the broadside of the vessel amidships; the remaining pair were mounted on the shelter deck and were protected by gun shields. The ship also mounted four 3-pounder () guns. Her anti-aircraft (AA) armament consisted of two quick-firing (QF) 20 cwt Mk I guns. She was fitted with four submerged torpedo tubes, two on each broadside.