Because I have exact information, I can alculate the formula constant for my boat ( 248 )
From this start point, I can then move forward to experiment with new values.
John, matttt, This would be very very easy to write for Boatmad, and you could place it in a section of the website.
I have written a very simple popup for conversions at
www.seahorse.org, second menu option: Calculate. This is used regularly, and the process would be similar to do the calculations for the boat stuff here....
.