I'm playing with the design of a 15 ft solo cruising sailboat, well for
weekends and short vacations anyway. I'm trying for as much freeboard as
practial to get interior headroom, plus a small cabin. I'd like to know
how to calculate the extra sail area and lateral resistance to compensate
for the extra freeboard. Is there a rule of thumb, easy formula, or some
sort of approach? I know how to calculate sail area and lateral resistance
when hull windage is ignored, ie the usual displacement, wetted surface,
and sail area ratios.



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