Scale 1:48. Plan shows the sheer lines, longitudinal half breadth and body plan design drawing for a unnamed 254ft armoured barbette battleship proposed by George Turner (1860). A note on the drawing states this plan was prepared in accordance to their Lordships order of 2 January 1860. The title of the plan is "Sheer Draught of a ship in Iron Armour (submitted as being invulnerable) proposed by Mr George Turner Master Shipwright of Woolwich Dockyard April 30 1860".