"PCS-1457" supported the recapture of the Marianas, specifically Guam and Tinian landings with surveys before and after the invasion. After the Marianas operations the ship conducted general surveys in the Pacific until February 1945 when she conducted pre invasion surveys at Iwo Jima followed by surveys as the island was being secured. Charts resulting from surveys were printed on board with a survey team from that ship erecting a reference navigational signal atop Mount Suribachi.