Optimization of the Internal Structure and Shape of a 470 Dinghy Centerboard

Abstract

The purpose of this paper is to design an improved centerboard for the Olympic 470 sailing dinghy sailing upwind. The design is improved by introducing a composite design that makes the centerboard twist to windward when sailing upwind, thereby reducing the angle of attack of the hull. The results show that a beneficial twist up to 1.5° is possible to achieve without compromising the centerboard strength. According to our estimates, by utilizing the improved design it is possible to obtain a gain of up to 9 s per race in a world cup race.

Keywords

• 470
• sailing
• hydrodynamics
• induced resistance
• twisted centerboard
• composite design