Research on the first kaitens began in February 1944, followed on July 25 of the same year by the first prototype.
Followed on 25 July of the same year by the first prototype. Research on the first kaitens began in February 1944.
Research on the first kaitens began in February 1944. Followed on 25 July of the same year by the first prototype.
Research on the first kaitens began in February 1944. Followed on 25 July of the same year by the first prototype.