Unnamed 31ft steam cutter for the royal yacht Osbourne (1870)

Various scales. Plan shows the midship section, inboard profile, plan view and details of an unnamed 31ft steam cutter for the royal yacht Osbourne (1870). The midship section, inboard profile and plan view are drawn at 1:12 scale while the details are drawn to 1:1 scale. The plan is fragile, torn and in need of conservation. The drawing bears a signature made on behalf of the Chief Constructor at Portsmouth Dockyard.