APPENDICES

I have made 1 keel and  1 rudder designs trapezoidal, to simplify manufacturing, adding an elliptical rudder for very low wind.

These fit my designs perfectly, but can be used in other designs as well by trimming and adjusting the keel head.

Where I have really evolved is in the profile of these, making them very thin to achieve higher speeds in downwinds.

In addition, when close-hauled the profile has the particularity of having the same thickness of 5mm up to 3 degrees of drift, helping to reduce the resistance to general advance.

Another important fact is that I am currently able to manufacture fins with an average weight of 90gr, and rudders of 35gr.