Scale 1:24. Plan shows the starboard inboard profile, looking from port and the sections, as fitted for the E class submarine E 9 (1913). A Vickers Limited builder's stamp dated 13 January 1915 is printed on the plan. A Vickers Limited Admiralty Overseer's stamp dated 14 February 1915 is also printed on the drawing. The plan shows the sections at Frames 58 and 88 looking forward. The drawing also shows the sections at Frames 8, 22, 31, 41, and 50 looking aft.