Scale 1:48. A drawing of the paddle Royal yacht Elfin (1849), signed by Oliver W. Lang, Assistant Master Shipwright at Chatham Dockyard, and dated 15 June 1848. Showing sheer lines, body plan and longitudinal half-breadth. With the inscription: 'Sheer Drawing of a despatch steam vessel prepared in accordance with their Lordships' direction of 5th June. Approved June 21 S.H. Board H.G. Ward'.