What can I say, the numbers provide are wrong. The I-17R (or F17) has a much larger sail area then that. Go to Texel and see for yourself. 16.44 sq.mtr. over 15.14 sq. mtr.

That 15.14 number is for the Inter 17 XL of which I know of only one sailing, this version never got of the ground in earnest. And nacra Europe is specifying yet another mainsail area for their nacra 17, this is is yet to be measured by Texel.

This is all just mind bogling confusing. But the end result is still the same. There is no level 17 foot formula class.

Wouter