They were called the "Three-Sisters" and these three vessels actually came into being due to the 'kamikaze squadron's' that was having a heavy impact on our warships of the time.
To counter these squadrons we needed some heavy-caliber antiaircraft weapons.....so this is how the " All-Gun Cruisers" came into being designed and built.
They were being designed from the proved Baltimore-class of the 1940....and to couple these massive vessels with the new fast firing automatic 8in/.55-cal at the time being developed.
Click on the link below if you'd care to give this one a look see.
Hope you enjoy