Wouter, I just checked the Texel rating for a certain f16HP configuration, and it appeared that it was 2 points faster than a F18 class, <br>Otherwise, if we would have a rating for the F16HP, it would be 101! <br> <br>I think the main difference is in the assumption of the “rated weight”; under Texel Rating are weighed without the weight of the spinnaker. <br> <br> <br>For Group 3 : I used the following input: <br> <br>Rated weight: 100 kg –6kg (for spi) =94kg <br>+crew weight 150 kg (standard for this length)=244 kg total <br>Rated length 5m, Rated mainsail area 13m^2, Rated jib area 3,75 sq.m. <br>3 points deduction for the spi. <br>This gives a rating of 100.73 <br> <br>I checked it with the original TR spreadsheet, but also with your calculator. <br> <br>So, if we want to be equal to the F18’s, under the current rules, I guess something has to be changed: <br>Possibility’s: <br> <br>a) Leave the rating to 101, and forget the F18’s <br>b) Make the boat smaller (bad idea) <br>c) Reduce the jib from 3,75 to 3,01 sq.m. <br>d) Increase the minimum weight to 103kg ex spi, or 107 with spi. <br> <br>Wouter, If you could check this, it would be nice. If this is true I would vote for option d and second choice option a. <br> <br>Another question, I also saw that maybe the hardcore 16 (=hurricane 500) could be grandfathered, but this boat has no daggerboards, and these are required by your proposal. <br>What is the reason to require dagger/centreboards?? My idea is to delete this requirement. <br>(Btw, my Hurricane 500 is for sale now, if you know anyone for a “planing” cat…) <br> <br>Geert <br><br><br>