Scale: 1:48. Plan showing the inboard profile with scroll figurehead, longitudinal half-breadth of the upper deck, and lower deck with platforms for Alert (1779), Otter (1779) and Falcon (1782), all 10-gun Brigs (later Brig Sloops). The plan includes alterations to the foremast, and upper and lower deck beams.

Despite the Admiralty Curator Stamp referring to Childers, the plan does not relate to the ship specifically, but to the ones mentioned in the list top right of the plan.