I am about to start decking my C16, which has been built from plans. Interestingly, nowhere on the plans, nor in the Assembly Manual, does it specify exactly where the fore/aft position of the cockpit should be.
The plans indicate that the leading edge of the coaming should be in line with the front edge of main deck-beam. However, since deck-beams may vary in width, mine is 20mm (a tad over three-quarters of an inch), there appears to be no precise guideline.
Any C16 plans builders out there ?