Unnamed proposed iron floating dock (1856)
Scale 1:48. and 196. Plan shows the transverse section (1:96) and the longitudinal section (1:48) of an unnamed proposed iron floating dock. The title of the plan is "Transverse and longitudinal section showing proposed form and arrangement of material for an iron floating dock". The dock is shown carrying the 100 gun ship of the line St Jean d Acre. This plan is fragile and in need of conservation.