Three weeks later, "Saugatuck" moved further west; and, at the end of August, she commenced operations out of Seeadler Harbor in the Admiralties. From that base, north of New Guinea, she supported the units engaged in the assault and occupation of the Palaus in September, and of Leyte in October. She then shifted her base to Ulithi, whence she sortied to refuel units of the fast carrier force as it struck Japanese installations and shipping in the Philippines, Indochina, Formosa, and Ryukyus during November and December; as it supported the Lingayen assault force in January 1945; and as it hit the Japanese home islands in February. In March, "Saugatuck" moved into the Volcano Islands where she fueled ships supporting Marine units fighting on Iwo Jima. In April, she got underway for the United States.