Yokosuka Naval Air Technical Arsenal (海軍航空技術廠, Kaigun Kōkū Gijutsu-shō, lit.

Naval Air Technical Arsenal) had many names, each depending on the period of its existence, and the circumstances at that time.

[2] When a number of foreign aircraft were purchased for evaluation, the Navy brought them to the arsenal for processing.

The arsenal was renamed Kaigun Kōkū Shiken-sho (Naval Establishment for Aeronautical Research) in December 1919.

A large amount of draftsmen and Designers were transferred from the Hiro Naval Arsenal, ending aircraft production there.