I get the impression you're looking for other people's comments, but can
I answer too?

Short Wave Sportfishing wrote:
So the question occurred to me after I closed a reply to Doug King
about sailing hulls.

Are sailboats considered planing hulls?

Sure... wait, not all of them! Some sailboats were planing back in the
1890s, long before any motorboats had reached the necessary power/weight
ratio.



For example, a Hobie Cat - is that a planing hull?

No, because the hull does not provide any lift from the force of the
water going past/under. This is the key to planing. Catamarans can
exceed what's thought of as "hull speed" limits because they are not
bound as strongly by their wave train. A hull narrower than about 8:1
length-beam ratio does the trick.

DSK