I came across an article about this aircraft and was intrigued by it's similarities to our own Navy P-3. As we phase out this airframe, they throw on some new fans and give it life. I don't know much of anything about the history of the P-3, or how these aircraft are related. It seems the P-3 was originally produced by Lockheed, and the P-1 by Kawasaki Heavy Industries in Japan. It's interesting though, maybe someone can shed some light?