Hello Tony
The planking was made from Obechi……a very light wood and the keel was from Mahogany
The keel was made adjustable for the initial sailing tests and then never adjusted again……I didn`t need to calculate anything!
Another reason for the loose keel was that all the lead which was inboard and extremely heavy was taken out and can now the model can be transported without the lead.
It is radio controlled, with a sail winch, small prop motor, rudder control and a bilge pump
Cheers Bob