ISAF and TEXEL info can be linked off the 16 site <br> -http://www.geocities.com/f16hpclass/F16HP_ratings.html <br> <br>-Using Inter 20 specs as a base -weight 380 + Jib 53 main 208 -spin 270 ---crew av 330 <br> using 1-jib 3 main and 10 sq ft added to spin for each 10 Lbs of weight , - <br> would appreciate some also running the numbers and helping get this correct , it may require a curve in the ratio . <br> <br> The short description of the class is an equal total crew and boat weight to sail area class ,--If your lighter you get less sail area in main jib and spin , if your heavier you get more sail areas per ISAF-Texel and class rating,<br><br>