No scale. Plan showing a part frame profile at the midships for Swiftsure (1804) and Victorious (1808), both 74-gun Third Rate, two-deckers. The plan has been identified as relating to that class, designed by Henslow, because the gun deck and extreme breadth dimensions listed match that for the two ships.

The annotations on the plan relate to the guns, the construction of the frames and beams, and ship dimensions. Unusually, the gun ports are not staggered from deck to deck, this scheme avoids cast or shifted upper futtocks or toptimbers, reducing the labour involved in construction.