In July 1957 "Sweetbrier" was moved to Juneau, Alaska, where her mission responsibilities remained unchanged. One unusual event in her maintenance of aids to navigation was the aftermath of the 1964 Alaska earthquake. Tidal fluctuations washed away a number of buoys in Whitestone Narrows, northwest of Sitka. "Sweetbrier" turned back the ferry "Malaspina" rather than let her try to navigate the narrows without its buoys. Her search and rescue missions continued to revolve around the local fishing fleet. She was pressed into fire-fighting service again in August 1959 when the Juneau Plywood Mill burned. In December 1961 "Sweetbrier" was used to deliver the mail to Skagway. High winds had prevented planes from flying to town for two weeks and 9,000 pounds of holiday mail and packages were loaded into the ship's hold for delivery.