I have noticed that there are two more common mast step positions. A forward position about 110cm from the bow, and a more aft position about 130cm from the bow.
The original Uffa King design was 3 foot 6 inch = 106cm
1/3rd of boat length, which is common in the Merlin, would be 120cm
Is this a design specific difference or does it alter within a hull design?
Is there a commensurate movement of the centre-board?
What are the effects of a more forward mast step and vice versa? Is this to do with benefits of a large jib?