sail code 0

Hello Alex - I regret I don't have the exact figures to hand but it is certainly large for my 12m vessel, a full radial 'crossover' between a pure Code 0 and a gennaker set on a Facnor FX2500CZ and a very light furling line integral to the luff.   I'd tried a top-down furler before and hated it but this sail has been brilliant; easy to use and effective.

You might find some of the details you want here: HANSE 458 - sailboatdata, but as I wrote I do recommend talking to a good sailmaker.  That said, if you've been offered the 85m2 sail at a good price, you can rig it easily on your vessel and you're not a 'speed freak' determined to squeeze every last tenth of a knot then its probably perfectly suitable.  As the 458 has a jib area of 48.94 m2 then the recommended area is between 88-107m2 anyway.  However, do not assume that the smaller sail will be flatter; the shape of the sail is determined by the sailmaker using some 'interesting' mathematics which cannot be determined from the IJPE numbers alone.

All the best!