Hi TigerTiger do not fully follow the two previous replies with cotton and carboard as they are talking sails, where as you are talking about the hull, as you can see by the photo the keel is cut as part of the centre of the boat which all the bulkheads are attached to, my layout of the keel placed it where it is, and to replace it anywhere else would mean cutting it off, as for making the hull water tight, it is not on, as its secured to the build table, If its wrong I will need to cut the keel off, , and plank up and then float it as you suggest, I was hoping I could find the correct location at this stage of the build, the problem of taking measurments from Photo's are they are not always true lengths. to answer your questions
Have you double checked your measurements ( yes )
Have you double checked the angle between the sheerline/deck and the keel fin? (you will have to explain this)
Is the fin on the original boat dead straight? ( yes )
Its not only the boat that will be out of its depth, I think that I am as well, but it does keep me busy.
Thanks for replying
Geoff