Scale varies. A plan showing the overlaid sheer lines, body plans and longitudinal half-breadths of the Barnabas 63455 (1881) and the Martha (circa 1870), both mackerel drivers. In addition, there is a half-plan view specific to the Barnabas, illustrating the spacing of that vessel's beams. The plan was drawn by Philip Jesse Oke at Plymouth in March 1937, after designs by William Paynter of St Ives.