Various scales. Plan shows the inboard profile, body plan, sail plan, upper deck and the lower decks of a proposed unnamed 100ft steam dredger for service in Malta harbour (1859). The title of the drawing is "Steam dredger for Malta harbour". The scale of the sail plan is 1:192 while all the other drawings are drawn to 1:48 scale. The top left corner of the plan is missing. The drawing is fragile, resides in pieces and is need of conservation.