The ventilo 18 listed is not an F18HT. Take a look at it's weight 147 kg (17 kg overweight) and the fact it has a jib and that it's combined sailarea at 18,2 sq. mtr. is considerable less than the 20 sq. mtr. allowed under the F18HT rules. And it would be strange when teh F18HT was rated slower than the F18 and F16's under this isaf system



In fact the Ventilo F18HT doesn't have a rating udner ISAF.



Also the NEW tornado that everybody knows has a rating of 0,93 ; I know that the predesessor Tornado sport has a rating of 0.97, as you say, but hardly anyone sails that rig anymore. All tornado sailor with any aspiration have switched to the new larger rig.



The other numbers are right .



Wouter