Simplified stability estimationfor powerboats

[Alik]

Working on method to estimate powerboats initial stability.
I propose diagram to estimate lever of form to chine beam ratio (Lf/Bc) depending on:
- chine beam to hull draft ratio (Bc/T)
- deadrise angle 0,5,10,15,20,25
- heel angles 5, 10, 20 deg.

These graphs are intended for planning powerboats.
Lf/Bc=f(Bc/T, deadrise, heel)

Lever of stability You can calculate like this:

L=(Lf/Bc)*Bc-Zg*sin(heel)

L - lever of stability, m (=GZ)
Lf - lever of form, m
Bc - chine width, m
T - hull draft, m
Zg - vertical center of gravity from baseline, m (=KG)

Please, test on Your designs and make comments.

[Alik]

Paper on stability estimation is almost ready. Please, advice in content and correct English. This papaer is supposed to be for conference, but method aimed at practical use.