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. "Queen Elizabeth" was the only ship of her class that mounted all sixteen of the designed BL Mk XII guns in casemates. Twelve of these were mounted along the broadside of the vessel amidships and the remaining four were grouped in the stern abreast 'X' and 'Y' turrets. These latter guns were quickly found to be too close to the water and were frequently flooded at high speed or heavy seas. Two were removed and the other pair were shifted to positions on the forecastle deck near the aft funnel, protected by gun shields, in May 1915. The ships' anti-aircraft (AA) armament consisted of two quick-firing (QF) 20 cwt Mk I guns. She was fitted with four submerged 21 inch (533 mm) torpedo tubes, two on each broadside.