Line up a vertical straightedge from the boat sole at the bulkhead section. The straightedge will be used to record the hull's shape. Each section is a location along the boat's length where the bulkhead meets the hull.
Mark the horizontal distance between the straightedge and the hull every 6 inches up the straightedge. This spacing provides enough precision to fair the shape of the hull on the bulkhead.
Draw the vertical line from which you measured hull distances onto a wood panel, which you will use for the bulkhead. The drawn vertical line indicates the correct locations for reference against the hull form.
Mark the horizontal distances from the drawn line onto the bulkhead. Connect the marked points to fair the hull curve along the bulkhead. Make minor adjustments as necessary.
Cut out the bulkhead based on the pattern you marked.
Place the bulkhead in position, and refine any fairing to fix a tight fit. A good fit can have gaps up to about 1/4 inch.
Repeat the procedure for the other bulkheads.
