On 15 June 1943 "Zeilin" was designated as relief flagship, the battleship being the flagship, for Commander Amphibious Force, Pacific Fleet. In June and July 1943, "Zeilin" operated along the west coast of the United States before returning to Adak on 5 August to participate in the invasion of Kiska, Alaska. "Zeilin" left Adak on 26 August, arriving at San Diego, California on 2 September.