Scale 1:24 and 1:96. A plan with accompanying scale of displacement showing the sail arrangement and midships section of an unnamed merchant paddle steamer (circa 1860). In addition to the drawings, there are also tables of dimensional data for the hull, masts and spars, and figures relating to the launching arrangements. The vessels are identified as ships no. 1 and no. 2 on this plan, but there is no further information.