Okoume Marine Plywood, 18mm x 4' x 8'. Considered perhaps the finest construction plywood available for boats, Okoume is certified to British Standard 1088. Used by hobbyists and some of the world's largest boat builders, it is most often used in combination with epoxy and fiberglass creating a structure that can be stronger and lighter than plastic or fiberglass and rivals the performance of more advanced composites such as carbon fiber. The grain appearance is prized, likened to that of mahogany, and is often varnished for a decorative appearance. OVERSIZE! This item exceeds standard freight size limits. Additional shipping charges may be applied to your order at time of shipment.