Mersey (1858); Orlando (1858)

Scale: 1:24. Plan showing the midship section illustrating the way the beams are attached to the sides, and a midship elevation illustrating the frames and diagonal supports for Mersey (1858) and Orlando (1858), both 40-gun screw frigates being built in royal yards.

Initialled by either J. E. [John Edye, Assistant Surveyor] or J. L. [James Luke, Inspecting Officer]