sentences:  On 15 July 1941, he was assigned to the submarine "I-24", becoming its torpedo officer on 31 October, under Lieutenant Commander Hiroshi Hanabusa; the ship was based out of Kure.Throughout the year, the submarine conducted training maneuvers with a group of midget submarines.On 18 November, "I-24" and her group sailed from Kure with a midget submarine attached to her afterdeck.