: Hi
: I recently purchased a kayak but it has only one bulkhead and
: wanted to install a fwd bulkhead. In order to get a sizing for
: the bulkhead I marked the outside of the hull at the place where
: the bulkhead was to go with 1" intervals and using a spirit
: level measured from the level to the hull at the intervals.
: Results of the plot were poor so thought I'd see if anybody had
: good way of going about this!
: Many thanks
: Pat

Hi Pat,
To add to what the others said, you could get the shape of the hull and deck using a flexible scribing rod (which is actually kinda square). Mark the widest part of the kayak circumference with bits of tape, usually the gunwale. Wrap the scribing rod around the kayak hull and mark it with a pencil at the gunwale tape marks and transfer to ply. Do the same for the deck.
Measure the hull thickness inside the lines on the ply. That line will fit the inside close to perfectly. You can use the ply shape as a master or as the bulkhead itself if you trim is slightly smaller for sealing with Lexel or the like.

Mike Savage
South West Cork