Mezue ahịrịokwu na-esonụ: "Mackinac" laghachiri Saipan n'April 1945. Na 11 Mee 1945, ọ sonyeere otu ụgbọ mmiri nke dị na Kerama Retto na Ryukyu Islands n'oge mkpọsa Okinawa, wee gaa n'ihu n'ọrụ dịgasị iche iche, gụnyere nnapụta ikuku-oké osimiri na bọmbụ nke Japanese-held Rose Island. Mgbe ndị otu ụgbọ mmiri ahụ kwagara ọrụ ya na Okinawa na 14 Julaị 1945, "Mackinac" lekọtara ụgbọ mmiri torpedo site na mbido Ọgọstụ 1945. Mgbe ndị
Mgbe ndị Japan kwụsịrị ịlụ agha na 15 Ọgọstụ 1945, e kenyere ya isonye na Task Group 30.5, bịarutere Sagami Bay, Tokyo, Japan, na 28 Ọgọstụ 1945.