[3] After shakedown training out of Oakland, Ganymede departed San Francisco, 28 August 1943, carrying military cargo to Pallikulo Bay, New Hebrides, and to Queensland, Melbourne, and Sydney, Australia.

[3] The ship was one of five Navy manned Liberties assigned 8 December 1943 to the Southwest Pacific Area for service under operational control of the Commander, Seventh Fleet in meeting US Army requirements.

[4] Assigned to the Seventh Fleet Service Force, she sailed from Queensland on 29 November 1943, with fuel, supplies, and passengers for Milne and Langemak Bays, New Guinea and thence returned to Australia.

Her itinerary was expanded in February 1945, to include Leyte, Manila, Subic Bay and Samar in the Philippines, with occasional calls at Manus, Admiralty Islands.

[3] Towed back to San Francisco, her name was struck from the Navy List 1 August 1947, and she was returned to the War Shipping Administration (WSA) on 1 October 1947, and entered the National Defense Reserve Fleet at Suisun Bay, California.