After the end of the war, "Alshain" continued her role as a cargo supply ship. Among the islands she served during the next three months were Eniwetok, Guam, and Okinawa. The ship reached Pearl Harbor on 3 December and discharged her cargo. On the 16th, she got underway for Seattle, Washington. On that same day, the ship also detached from Amphibious Forces, Pacific Fleet. "Alshain" reached Seattle on 23 December and prepared to enter the Puget Sound Naval Shipyard for an extended availability.