had many names, each depending on the period of its existence, and the circumstances at that time. Many of the names were acronyms that were derived from its military name or designation, which changed from time to time. The arsenal was sometimes known as "Kūgi-shō" (a contraction of "Kōkū Gijutsu-shō" 空技廠). The name Yokosuka prevailed however, even though it referred to the Arsenal's location at Yokosuka, Japan.