Scale 1:48. Plan showing the body plan, sheer lines with some framing detail, and longitudinal half breadth for building Imogene (1831), a 28-gun, Sixth Rate ship building at Pembroke Dockyard. The half breadth has been modified to include the additional breadth. Signed Robert Seppings (Surveyor of the Navy). Annotation in top: "14th August 1828. The Alterations in the Dimensions and Half Breadth as here shown, and in the Quater galleries agreeably to the sketch sent in Feb 1827 are to be conformed to. R.S" [Robert Seppings, Surveyors of the Navy]