Scale 1:48. Plan shows the hold and platform deck, as fitted, of the Gorgon class monitor Gorgon (1918). An Armstrong Naval yard stamp, bearing the Admiralty Overseer's signature, dated 15 October 1918. A second Armstrong Naval yard stamp, dated 7 October 1918 is printed above the former stamp. Tables with details of the contents of magazines on these decks, are also printed on the drawing. There is a tear on the right hand edge of the drawing.