Hull Rocker

[Faster]

Originally Posted by bobperry

If you were to carve a dugout canoe and not taper the ends your Cp would be 1.00.
(providing the log had no natural taper to it.)
The more you cut away to taper the ends the lower your Cp.

Thanks Bob.. that's essentially what I was thinking. Thanks for the book reference too.

[SloopJonB]

Originally Posted by bobperry

Jon:
No you were wrong when you started and you are still wrong.
Cp and rocker can be connected but really have little to do with each other.

Think of an inland lake scow, zero rocker, high prismatic.

Once more, quit trying to connect rocker a two dimensional measurement with volume a three dimensional measurement.

The Scampi and the Peterson half tonners would both have had very similar Cp's. Probably around .54. Trust me. You are still thinking two dimensionally.

Keep in mind, again, Cp involves both ends of the boat. You are bow fixated.

O/K Bob, thanks. Time for me to hit the design books again. It's sure good to have someone with your expertise to discuss this stuff with.

[bobperry]

Jon:
I just feel bad that I can't explain it better. If you were sitting here next to me, I'd pull out a roll of flimsy and in no time have enough diagrams to show you what I mean. But I have lost patience with my own inability to put it into words. Killing's book is the best and partly due to the most excellent illustrations.