Using a spare sheet of 6 mm plywood made the general shape of the bulkhead, then transferred he measurements off the hull at several positions and then marked them on to the Marine plywood.
Then having transferred the marks on to the marine plywood put a spline round fixed in position by small nails to give a fair curve
All marked off and ready to cut out
Then cut out with a jigsaw close to the line the get to finish off with a hand plane
In the bench vice getting its final trimming
Lloyd's Register-Marine Plywood being used through out this refit.