In article ,
Rodney Myrvaagnes wrote:

On Wed, 20 Apr 2005 05:25:11 GMT, Jere Lull wrote:

In article ,
DSK wrote:

Usually making hulls non-rigid makes them slower for given power.

One notable exception: a PortaBote, but that's not practical for most
hulls. The hull deforms unbelievably, which is disconcerting.

It is hard for me to believe that is an exceoption.

It would be notable if so. Indeed, it would be a miracle.

Obviously, you haven't run around on a PortaBote. 4 HP gives a solid 10+
knots speed with lots of load.

When the boat goes on plane, the "floor" under the helmsman's feet drops
a bunch of inches. Unlike a solid hull, the PortaBote expands into areas
of low pressure to limit the drag (suction).

Rodney Myrvaagnes NYC J36 Gjo/a

"Religious wisdom is to wisdom as military music is to music."

I *LIKE* military music, aka Marches.

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/