In order to sail 470 faster, authors consider the sailing performance of 470 from the various measured data and the simulated results of VPP (Velocity Prediction Program). This is a summary of TOBE-470 presented by the author.
The 470 (Four-Seventy) was designed in 1963 by the Frenchman Andre Cornu as a double-handed mono-hull planing dinghy. The name comes from the overall length of the boat in centimeters (470cm). The 470 is a World Sailing International Class has been an Olympic class since the 1976 games. In Japan, the 470 is used in university championships and in National Athletic meets. So, it is in the most popular dinghy race in Japan. An ideal crew weight of skipper and crew is 130kg, it is suitable for Japanese who are smaller than Europeans and Americans. This paper progresses the science of the sailing performance of the 470 with respect to aspects such as hull performance, sail performance, steady sailing performance and maneuvering performance.