Boat kit contents: kayak kits: precision pre-cut bs-1088 okoume plywood panels(4mm), cockpit coamings, system three epoxy, measuring pumps, 38" wide fiberglass cloth. Polyurethane glues have many uses and strong features. polyurethane can be useful in boatbuilding projects but there are also problems associated with using pu (pur. I performed a test; nidacore vs. plywood for my own information, but thought i would pass along my findings. i had no other reason for doing the test….