the 5.5-inch and 4-inch guns were replaced during her refit in early 1939 by a dozen qf 4-inch mk xvi guns in six twin dual-purpose mark xix mounts. one mount each was on the former flying-off deck and the quarterdeck while the other four were mounted two per side. two more mark v 2-pounder mounts were added fore and aft of the newly added island superstructure at the same time. while later refitting in the united states, the ship was fitted with a maximum of 22 manually operated automatic oerlikon light anti-aircraft guns, which replaced the single quadruple vickers .50 machine gun mount.