Scale 1:96. A drawing of the Exeter Class 3d rate 64 gun warship Prudent (1768) as converted to a prison ship, made by Edward Sison at Plymouth Dockyard and dated July 1794. Showing plans of the quarterdeck and forecastle, upper deck, lower deck and orlop deck. With the inscription: 'A copy was sent to Antigua as a guide for fitting the De Ruyter for a Prison Ship in September 1803'.