Daz........
1. do you have hull drawings?........elevation and plan view?
2. if not and you have the hull, it is not difficult to measure the hull & create/draw an elevation view which confirms the hull '
shear'
3. from the '
shear', you can draft an actual profile of the deck ....which could be a 3D representation
Many years ago....before I could afford a professional Drawing Board for home use ...& long before computers & computer software packages.......I removed a door from an unused bedroom & hey presto....a 3.2 M x 1.2 M horizontal drawing table
...[in the middle of the lounge room]
Very easy to draw & loft lines
....why not try it
.... a good learning experience..............
Derek