Scale 1:48. A plan with an accompanying table of masts and spars showing the sheer lines, body with sternboard, longitudinal half-breadth, upper deck, lower deck and midships section of the Royal Yacht 'Chatham' (1741). The sheer lines and body also show details of the exterior decoration, and some inboard data. The plan is titled 'Draught of the Chatham Yacht as repaired at Chatham 1793' and has been signed by Thomas Pollard [Master Shipwright, Chatham Dockyard from 17 April 1793 to 17 June 1795].