Emirau Island
Shifting to Espiritu Santo soon thereafter, "Willoughby" picked up necessary spare parts vital to the continued operation of PT boats in the Philippine Islands on 4 January 1945 and departed for the Treasury Islands on 5 January 1945, where she picked up more spare parts after her arrival on 8 January 1945. She continued loading operations at Green Island, Emirau Island, and Manus before returning to the Philippines, anchoring in San Juanico Strait on 18 January 1945.