She got underway for Alaskan waters on the 14th and arrived in Dutch Harbor on the 23d. For almost 31 months—through the end of World War II and during the early postwar period—Besboro steamed along a resupply circuit carrying cargo and troops between Seattle, Washington, and various points on the coast of Alaska. She returned south for the last time early in 1946. After an inspection and survey at the Mare Island Naval Shipyard, the cargoman was declared surplus to the needs of the Navy. Accordingly, Besboro was decommissioned at San Francisco, California, on 3 May 1946. She was turned over to the U.S. Maritime Commission for disposal on 1 July 1946, and her name was struck from the Navy list on 8 October 1946.
