Scale 1:48. Plan showing Inboard profile as proposed (and approved) for 'London' (1766), and later with alterations for 'Impregnable' (1786), 'Prince '(1788) and 'Windsor Castle' (1790), all 90/98-gun Second Rate, three-deckers. The alterations in green illustrate the three later ships as fitted, with the exception of the quarterdeck beams on Impregnable and 'Prince'.