310ft Iron cased ship (1861)
Scale 1:24. Plan shows the midship section and a partial horizontal section through the gunports design drawing for a 310ft Iron cased ship (1861). The title of the plan is "Midship Section for an Iron cased ship of 4706 Tons". The plan bears the signature of Isaac Watts [Chief Constructor 1860-1863] and Joseph Large [Constructor 1861-1863].