The new F50 follows the winning double F36 (female lightweights) and F44 one of our best selling boats ever. Our attention has been focused to the woman senior single. In both our physiological and physical studies on how boats react, we have been able to confirm some obvious considerations, but not formally codified until now. This concerns the inertia action of female athletes on the boat is considerably different compared to that produced by male athletes.Using specialized software (such as our Kimé), we can understand the dynamics of athletes movement in relation to their equipment. In particular the results of new actions on both the oars, and the boat and the subsequent forces which result.In short, the differences between the application of these forces in male and female athletes results in lower inertia in female athletes, particularly in the acceleration of the boat by the athlete.The findings allow Filippi to revise hull design to maximize speed against specific athlete type and design moulds which focus on different athlete dynamics and provide forward speed.