Scale 1:192 and 1:96. Plan shows the inboard profile with sails, half plans of the upper and lower deck, a plan of the hold and the sections for a unnamed proposed 300ft twin screw Protected Sea Going Torpedo Vessel (1882). The title of the drawing is "Sketch of Proposed Twin Screw Torpedo Vessel of 16 Knots Speed". There is a large tear on the left and right hand edge of the drawing.