Since plywood it too narrow to attach at right angles, we use strips of wood along the edges to give us something to glue-n-screw to. Chine Logs are the strips that connect exterior planks together. Cleats are the strips that connect bulkheads (interior walls or framing) and seats.

Puddle Duck Racers are 48 inches wide. For these plans, the sides of the PDR fit inside the tansoms (flat ends of the boat) so the cleat/chine has to be trimmed off a bit.

The airbox top will fit over the top edge of the sides - the cleats have to be placed so when the sides are attached, the outside of the side will still fit under the airbox top.