Scale: Unknown. A sectional model depicting a plan for connecting beams to ship sides, with iron knees under the beams and chocks behind the knees. The side of the ship, beam and chock have been made in mahogany and varnished and the iron knee has been depicted in lacquered iron. The knee has been nailed to the wooden parts to resemble iron bolts. A small paper label marked "21" has been applied to the inner face of the ships hull.