I stumbled across this site following a thread on a different web site. It's a nice tool that calculates anticipated boat characteristics based on hull length, displacement, etc. There's a fairly comprehensive data base that permits comparison between any two boats. Or if your boat isn't in the list you can input the data and it will calculate for you.
Mike
http://www.image-ination.com/sailcalc.html
Mike
http://www.image-ination.com/sailcalc.html