Returning to Pearl Harbor on 9 June, the destroyer underwent an extensive overhaul, followed by the now familiar pattern of local operations, crew training, and constant ASW exercises. In a change of pace the following spring, "Carpenter" departed Hawaii on 15 March 1957 for a series of goodwill port visits throughout the South Pacific. The destroyer stopped at American Samoa, Manus in the Admiralty Islands, and Sydney, Australia, before returning to Hawaii on 28 August. Later that fall, "Carpenter" underwent an overhaul and received two of the new 3-inch/70 "quick-firing" antiaircraft gun mounts for testing and evaluation.