Per this exceptional decade-long blog featuring WW2 Japanese installations (the link for this particular location is here https://airport1111.blog.ss-blog.jp/matsunami-airstrip but is in Japanese), this was the staging area for the use of Kayaba Ka-1 (reverse-engineered Kellett KD-1) observation autogyros which were used here primarily for submarine spotting.
Airport comments for the Ishikawa Prefecture, Japan
Gyrofield, you say?
🔗 Fri, 14 May 2021
— @animebirder at Matsunami Gyrofield, Japan
Per this exceptional decade-long blog featuring WW2 Japanese installations (the link for this particular location is here https://airport1111.blog.ss-blog.jp/matsunami-airstrip but is in Japanese), this was the staging area for the use of Kayaba Ka-1 (reverse-engineered Kellett KD-1) observation autogyros which were used here primarily for submarine spotting.