"Thuban" anchored in Leyte Gulf on the 15th but got underway three days later, bound for the Schoutens, and arrived at Biak Island on the 22nd. After loading elements of the Army's 41st Division, she departed New Guinea on 2 February, paused briefly in Leyte Gulf, and arrived off Mindoro Island on the morning of the 9th. There she lowered her boats and began unloading which continued through the night as Allied mop-up operations on Mindoro reached completion. Underway on the 10th, she proceeded via Leyte and Ulithi to the Volcanos. Arriving at a point southeast of Iwo Jima in company with TG 12.6 on 9 March, she remained there until the morning of the 17th when she proceeded to the hard-won island and embarked tired, battered, but victorious Marine units. She weighed anchor on the 27th and reached Saipan on the 29th, where she loaded cargo of the 5th Marine Division Air Transport Group. She departed the Marianas on 14 April and steamed to the Hawaiian Islands where she discharged her cargo before continuing on to moor in San Francisco Bay on the 27th.