The stringers, floorboards and wales are Douglas Fir. Stems and “decks” are 12 mm Meranti ply and ribs are Arroyo Willow cut a short distance from the shop. Skin is 8 oz. polyester from George Dyson and it's finished with four coats (1st thinned 7x1) of clear water-based varnish. Finished weight is 31 pounds.