Joining her assigned division in Scottish waters, Cepheus sailed for Oran, where she arrived 6 April to report to the Eighth Amphibious Force.

Through May and June, she made a voyage from the Marianas to New Zealand to load cargo, and on 12 July, returned to Ulithi to join an Okinawa-bound convoy.

Four days later, she put to sea for the first of two voyages from the Philippines to Japan with occupation supplies, and on 28 October, she cleared for Portland, Oregon, from Hiro Wan.

MARAD records show she was given back to the Navy on 21 November 1946 and a "reconversion" contract was awarded to Maryland Drydock Company on 2 May 1947.

In 1968, while being on a ballast voyage home from Sattahip, Thailand to Tampa, Florida, she ran aground at full speed on a reef off Honduras and was heavily damaged.