San Francisco Naval Shipyard
In the fall of 1950 "Norton Sound" underwent a four-month overhaul at San Francisco Naval Shipyard. New Terrier missile handling, launching, stowage, and guidance systems were installed, and she was reclassified AVM-1 on 8 August 1951. This was the first of three extensive alterations accomplished through 1955. Test launchings of Terrier and Tartar missiles continued through 1958.