About 10 : 00 , Kamimura 's gunnery officer erroneously informed him that Izumo had expended three - quarters of her ammunition .
Izumo turned back after a five - minute rapid - fire barrage .
About 10 : 00 , Kamimura 's gunnery officer erroneously informed him that Izumo had expended three - quarters of her ammunition and he turned back after a five - minute rapid - fire barrage .