FRAM II
Ships in the Sumner class received only armament modifications under FRAM II, and not all ships of the class received the FRAM upgrades. Although the rear deck was also converted as a flight deck, the new torpedo tubes were placed where the older 21" ones had been, and ASROC was not installed. The converted Sumners were designed for another five years of service .
All classes came in for FRAM II refits starting about 1959, being rotated out of service in order to keep as many ships at sea as possible. The upgrades were complete in the early 1960s, and most of the ships involved continued to serve until the late 1960s.
Read more about this topic: Fleet Rehabilitation And Modernization