Scale: 1:24. Plan showing the body plan, longitudinal section (profile), longitudinal half-breadth and plan for the wooden steam yacht Blunderbuss (1874).

The identity of this vessel is uncertain as the scaled dimension gives a length of 40ft, beam of 9ft 6inches, but Lloyd's Register of Yachts quotes 45ft length with 10ft beam.

This plan is fragile and in two parts.