Scale: Graduated bar scale. A plan showing the Lines profile, half-breadth & body of an unidentified 80-gun Third Rate two-decker, of dimensions similar to the Caesar class of the 1780s. The profile drawing shows the positions of the masts, some detail of internal framing, and elements of the exterior structure above the waterline. Dimensional data for the vessel is present in written form as is the number, calibre and distribution of guns.