Scale: 1:48. Plan showing the body plan, sheer lines, and longitudinal half-breadth proposed (and approved) for Adamant (1780) to be built by contract, and probably for Assistance (1781). The plan was used for Europa (1783), and Bristol (1775), all 50-gun Fourth Rate, two-deckers. The Portland (1770) and Renown (1774) are listed on the reverse, but would have been completed before this plan was created.

Signed by John Williams [Surveyor of the Navy, 1765-1784]