Hi Stein,

I never did a calculation with monohulls, so I can only guess.


The first thing I would do is to make a calculation to very high speeds again, much higher than the boat would be able to go, so I can be sure to cover the whole range.
For sure the beam/length or slenderness ratio will have an influence on wave drag. But I have no idea, if it scales the curve only or changes the whole nature of the curve. For this somebody should run a lot of different hull shapes in the michlet code. However I wouldn't expect any dramitical change.
A low wavedrag non-planing monohull may be to slender to have suffient roll stability. That's maybe the reason why they go the planing configuration.

But again, I guess rather than I know for monos.

Cheers,

Klaus