Scale: 1:48. Plan showing the body plan with alterations, sheer lines, and longitudinal half-breadth with alterations, for 'Hero' (1759), a 74-gun Third Rate, two-decker, and with the alterations for 'Hercules' (1759), and 'Thunderer' (1760), both 74-gun Third Rate, two-deckers. The reverse of the plan records that the sets of plans for 'Hercules' and 'Thunderer' were recalled in 1757 as their design had been modified.