Shape

[lancelots]

Which shape?

I was just wondering if anyone had any comments on the difference between the chine constructions of the Schionning against the round bilge of molded hulls.

Would the flat bottom be a benefit to planing if there is any such action involved under sail, in fact I wonder if this action would contribute to drifting (as much or perhaps more than windage) under sail, even at such a small angle as 10-15%.

The flat bottom would be a benefit to planing under power if enough power was present to get the hulls out of the hole so to speak, but this is with a flat aspect in relation the hulls contact with the water.

Also the chines are touted as a contribution to stopping the hulls from burying, but when travelling at any speed the slight lean would be enough to negate this effect, being that the hard chine is made more perpendicular to the water surface that it is being effected by, especially with the bows narrow and shall I say less chined surface.

Perhaps a hybrid highly concave side at the bow, Shuttleworth style but more pronounced, back to a Schionning rear, allowing a more spacious interior and maintaining a narrow hull shape at and below the water line.

Just some thoughts that I am having trouble clearing. Maybe I just need to change the medication I’m on!

Would anyone care to dive in and swim around this subject?