AIO, HMS Scylla, was also seen as valuable post war. Scylla had detonated a mine on 23 June 1944 off Arromanches. It was deemed uneconomic to return her to wartime service. But reconstruction at Chatham began in 1945 with a new fit of two twin Mk 6 3-inch/70 mounts and Type 992 radar approved. In 1947, after £350,000 of work, defence cuts and delays, the cruiser was written off. AIO-fitted cruisers (usually late Colony class and Minotaur class) doubled the effectiveness of armament in RN postwar assessment,. The concern of New Zealand naval servicemen and Phipps was on living conditions, recruitment, ammunition resupply in the Pacific and an affordable schedule of new frigates. The New Zealand Department of External Affairs viewed the British Treasury as getting rid of an odd cruiser and getting New Zealand to pay for the warships refit. However, as with Bellona and Black Prince in 1946, transferring Royalist was supplementing Australian defence. By 1955 the RAN had only light 4.5-inch gun, Battle-class and destroyers (building) and light carriers, HMAS Melbourne and Sydney, with obsolete Sea Venom fighters. Royalist could join an RAN task force with Melbourne and Sydney and the cruisers shells, offered AA and some deterrence to Sverdlov cruisers. Royalist, had modern two-channel fire control for its guns and radar processing and communications with the RN/ RAN Fleet air arms. The Australian Prime Minister Robert Menzies was dubious that RN policy in the age of nuclear deterrence, was "minor fleet to the Far East in peacetime only" and no real counter to piecemeal communist erosion in Southeast Asia. The UK defence review released on 10 July 1953, argued that new hydrogen bombs reduced the likelihood of 'long' broken-backed war requiring trans-Atlantic convoys and maintaining cruisers. The RN could not afford new AA gun models to supplement expensive missile developments like the Seaslug missile. Mountbatten publicly defended Royalist as the most modern British cruiser in Auckland when it arrived in December 1956 and regarded Phipps as inexperienced and unsuitable. Mountbatten viewed New Zealand's cabinet and officials as out of touch with the Cold War need to maintain ready, broad-based naval and defence capabilities and frequently visited New Zealand to make appeals. Royalist was fitted with a powerful combination of the standard fit of mid 1950s new RN warships radar, fire control and (three) STAAG 2 close in anti-aircraft systems firing RN 40 mm ammunition. STAAG was