Scale 1/16":1' (1); 1/4":1' (8). Comprise 'General description of Artificial Ventilation for information of Officers of Ship'; drawing of 'Watertight Compartments shewing Watertight Doors, Sluice Valves &c.'; plans of skid beams, platforms, upper deck, main deck, protective deck; profile; plan of hold (and sections); sheer drawing.