The Aimarine Special - Class F Racing Hydroplane driver - By JOE MICHELINI. Joe Michelini tells in step-by-step description with dimensioned plans on how to build his class F racing hydroplane with which he won the APBA Class F national title in 1958. All of the latest professional racing-hull design data gained from 25 years of experience are incorporated in these boat plans. Unlike the conventional 3-point, racing hull design, which has been and is still being used by most competition boat-racing drivers, my Airmarine Special represents a new concept in hydroplane design which results in a greater degree of stability and control in the 70 mph and higher range.