Scale 1:10. An unfinished plan with accompanying table of offsets showing the sheer lines, body and longitudinal half-breadth of the sailing smack Katie F5 (1820). Also illustrated are details of deck planking, a midships half-section and the sternboard.

This item is a Museum-generated copy of the original made at this stage in its drafting to illustrate the process by which raw hull data is translated into the form of a plan.