After serving as escort on a voyage to Eniwetok, "PC-1598" departed Pearl Harbor on 14 October 1944 to escort a convoy of LSTs by way of Eniwetok and Guam to Ulithi. Here a new convoy of landing craft was assembled, and with it "PC-1598" arrived at Hollandia, New Guinea, on 16 November. For the next two months, she escorted convoys among the ports of New Guinea, aiding in the assembling of shipping for the Lingayen assault. She left Hollandia on 10 January 1945 on escort duty for San Pedro Bay, Leyte, and on 9 February, arrived at Ulithi, where she joined in exercises, and transported men from place to place in the vast fleet anchorage.