[1] He was the only person who was posted as a director of the Torpedo Development Division in Yokosuka Naval District of Imperial Japanese Navy.

He and his team designed and developed Type 91 torpedo used in naval warfare in World War II by Imperial Japanese Navy.

He was promoted to the position of development management officer in the Imperial Japanese Navy Technical Department, and sent to the United Kingdom from May 20, 1925, to October 15, 1926.

Finally, he engaged the production and subsequent deployment of the completed “Type 91 torpedo” as the development management officer in the Imperial Japanese Navy Technical Department from December 1, 1931.

During the World War II, the Type 91 torpedo was used as a main weapon for Naval warfare, affixed to and deployed from the underbelly of aircraft.