To show you I'm a nice guy despite everything else
<br>
<br>BR = VLB2 / MAB".
<br>
<br>Board aspect ratio = Vertical length Boards squared / Mean or main area board..
<br>
<br>This equation can only be one thing and that is the calculation of the board aspect ratio that is used to determine the effectiveness of the total area.
<br>
<br>Compare it to the similar calcs performed on the sail area.
<br>
<br>Wouter<br><br>