Marine epoxy & fiberglass cloth for boatbuilding and boat repair — mas, system three, and west system epoxies. Marine plywood. our range includes as2272 ply bs1088 ply and exterior plywood to as2271. boatcraft stocks a wide range of marine and other plywoods suitable for use. We have boat plans (both yacht designs, catamaran designs and power designs) for all sizes for the amateur boat builder and professional boatbuilder..