She continued her support of the 3rd Fleet during the Western Caroline and Philippine Islands engagements in the fall of 1944 as well as during the Formosa and China coast attacks early in 1945.

Pamanset arrived off Iwo Jima on 26 February and participated in that campaign until returning to Ulithi on 2 March, thence proceeding to San Pedro, California, for extensive repairs.

After extensive operations in support of the occupation fleet in Japanese home waters, she departed Yokohama, Japan, on 8 November for San Francisco, California, where she decommissioned on 18 March 1946.

Reacquired on 10 February 1948, she was assigned to Military Sea Transportation Service (MSTS) on 1 October 1949, as USNS Pamanset (T-AO-85), manned by a merchant crew.

Upon completion of the conversion and delivery in March 1967 Seatrain Florida, IMO 6119807, was chartered to the MSTS in support of overseas U.S. military operations, including the transport of material, equipment and aircraft to Vietnam.