Daydream believer
Well-Known Member
For a start one would probably not get surface area accurate enough anyway.It initially seems a simple equation of surface area vs weight ... but the pressure exerted also changes with depth ...
But I would assume that given the hull draft rather than hull + keel - that the change is not great enough to make a simple calc too far out.
Then boat weight - we tend not to realise how much junk there is on board.
I do, because i have to empty the boat after my daughter has finished a couple of days holiday with me
