Juneau - class cruiser The " Juneau " - class cruisers were United States Navy light cruiser s which were modified version of the design . The ships had the same dual - purpose main armament as with a much heavier secondary antiaircraft battery , while the anti - submarine depth charge tracks and torpedo tubes were removed along with a redesigned superstructure to reduce weight and increase stability . Three ships were ordered and built , all completed shortly after World War II , but only remained active long enough to see action during the Korean War . Redesign . The " Atlanta " - class cruisers increased wartime complement and armament and loss of " Atlanta " and " Juneau " revealed weaknesses in their stability and hull integrity of the ships which was addressed in a 1942 redesign at the same time as the modified , the . The ships had the same main armament as , but the bridge and superstructure were redesigned to remove weight and increase visibility , and the reduction in weight allowed increased antiaircraft guns to be added with increased stability . Watertight integrity was improved by removing doors on the lowest decks of the ship between bulkheads . In addition , all the anti - submarine armament was removed , along with the torpedo battery . Specifications . The main gun battery of the " Juneau " - class was composed of six dual 5 inch / 38 caliber ( 127 mm ) gun mounts ( 12 5 - inch guns ) . The class was designed with a secondary anti - aircraft armament of thirty - two Bofors 40 mm anti - aircraft guns , and sixteen 20 mm rapid - fire anti - aircraft cannons with high - explosive shells . After the war , the ships were planned to convert to a 3 inch / 50 caliber ( ) secondary armament to replace the 40mm guns , but only the " Juneau " was converted . The class was powered by the same equipment as the " Atlanta " - class : four 665 psi boilers , connected to 2 geared steam turbines producing , and the ships could maintain a top speed of . On trial the " Juneau " made at 78 , 985 SHP . The ships of the " Juneau " - class had the same armor as the " Atlanta " - class : a maximum of 3 . 5 in ( 88 . 9 mm ) on their sides , with the captain ' s bridge and the 5 - inch gun mounts being protected by a mere 1 . 25 in ( 31 . 75 mm ) . The ships were originally designed for 47 officers and 695 men . Service history . Three ships were built and none of the ships served during World War II ; the lead ship of this class , the which was named after the war loss , was launched on 15 July 1945 and commissioned on 15 February 1946 . was launched on 22 September 1945 , and commissioned on 17 May 1946 . was launched on 5 March 1946 and commissioned on 27 November 1946 . " Spokane " and " Fresno " were decommissioned in 1949 and 1950 prior to the start of the Korean War , but " Juneau " , at this point redesignated as an anti - aircraft cruiser CLAA - 119 , participated in the conflict . On 2 July 1950 , " Juneau " , along with HMS " Jamaica " , and HMS " Black Swan " were attacked by 4 torpedo boats and 2 motor gunboats of the North Korean navy , and the combined firepower of the Anglo - American ships sank three enemy torpedo boats and both gunboats near Chumonchin Chan . She was decommissioned in 1955 , shortly after the war ended . All three ships were considered for refitting as guided missile cruisers or ASW ships but ultimately were sold for scrap in the 1960s .