Scale 1:192. A plan showing the outboard profile and plan view of an Iron Duke class battleship, illustrating the proposed arrangement of the standing, running and wireless rig. The drawing is dated 1 September 1911 and is signed by Philip Watts [Director of Naval Construction, 1902-1912].

There are two annotations on the plan; the first indicating the possibility of alterations being made to the arrangement of the tripod mast and funnels, and the second indicating that the drawing has been superceded as of April 1912.