The difference in mainsail area is no less then 1.5 sq. mtr. (= 16 sq.ft.)
Wouter, I've missed something here
from wik'
Hobie FX-one
Overall length : 5.23
Overall weight : 149 kg
Overall width : 2.5 mtr
Overall sailarea incl. mast : 14.91 sq. mtr.
Nacra F17 w/ spinnaker (source:
http://nacra.us/F17/Findex.html)Overall length : 5.23 mtr
Overall weight : 145 kg
Overall width : 2.6 mtr
Overall sailarea mainsail incl. mast :
15.14 sq. mtr. Overall sailarea spinnaker (small) : 15.5 sq. mtr.
Overall sailarea spinnaker (large) : 18 sq. mtr.
I make that 15.14 - 14.91 = .23 !
The EU Inter 17 was never intended to sail evens with the FX1, however (and I would need to check) the FX1 and Nacra F17 rate the same under current SCHRS.