Effort then switched to guided-missile cruisers, which by July 1955 had settled on a 15400 long tons ship armed with a two twin Mark 26 6-inch turrets, two 3-inch turrets and a single Seaslug anti-aircraft missile launcher, the design was the same length as the 1951 Minotaur cruiser but with 3 ft more beam, but was limited to one Seaslug channel by a 16,000-ton size constraint and the RN decided that 984 3D radar and two 901 control channels were required for 48 conventional Seaslugs and 16 nuclear AA Seaslugs, along with a gun armament of two Mk 26 twin 6-inch guns forward and 4 twin 3-inch/70 guns.