セイロン沖海戦
"Teiyō Maru" served with replenishment group no. 1 for the Java Invasion Force, and later with replenishment group no. 2 for the Indian Ocean raid, and with the 5th Fleet for the Japanese occupation of Attu and Kiska. "Teiyō Maru" was then converted for cold weather operations and served for two years as a replenishment oiler for ships between Hokkaido and the Aleutian Islands.