The "Queen Elizabeth" 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 forecastle deck near the aft funnel and were protected by gun shields. Their anti-aircraft (AA) armament consisted of two quick-firing (QF) 20 cwt Mk I guns. The ships were fitted with four submerged 21 inch (533 mm) torpedo tubes, two on each broadside.