Kammala jumla mai zuwa: A lokacin da aka kai hari kan Pearl Harbor a watan Disamba na 1941, "Okinoshima" yana aiki a matsayin jirgin ruwa na Admiral Kiyohide Shima a cikin Operation "Gi" (aikin
mamaye tsibirin Gilbert) kuma an tura shi daga Jaluit tare da Sojojin Ruwa na Musamman (SNLF). Daga 9 zuwa 10 ga Disamba, "Okinoshima" ya goyi bayan saukowar Jafananci a Makin da Tarawa, kuma a ranar 24 ga Disamba, kwace Abaiang. "Okinoshima" ya kasance a Truk a ranar 1 ga Janairu 1942.