"Roger Long" wrote in news:gd4hco$llp$1
@registered.motzarella.org:

http://www.unols.org/publications/ma...ium/motion.pdf

"Anything which impedes the transverse flow of water around a hull will
tend to reduce the amplitude, or angle, of rolling while leaving the period
unaffected."



I always wanted to put a nice long trunk into the keel of a simple planing
runabout with a weighted swing keel like a small sailboat that would simply
swing itself up into the trunk at planing speeds, yet swing down as you
came off the plane into displacement mode to stop the rolling WITHOUT
having to lose the deep-v narrow hull and replace it with the typical
trihull design with chines that make it pound like hell on every wave it
hits.....beating you to death in the process.

I rode across the harbor a month ago in moderate chop in an old deep V
aluminum fishing boat, circa 1965, that cut so cleanly through the chop
without pounding making the crossing such a more pleasurable experience.

I think I'd like to keep the V that rolls so much with a swing keel in a
trunk that would stop it and fold up out of the way at planing speed....

Silly old nut...That would cost profit!