Scale 1:12, 1:24 and 1:48. Plan shows the construction details, midship section and details of the stern of a unnamed 382ft, 3-masted iron-cased 36-gun frigate proposed by Samuda Brothers. The midship section includes detail sections, showing the general construction of the vessel and fastenings, and the backing of armour plates. The drawing has been embossed with the Samuda Brothers stamp. The plan is torn in various places.