Scale 1:48. Plan shows the sections, as fitted for the T class submarines Tudor (1942) and Thule (1942). A Devonport Dockyard stamp, dated 21 June 1944 is printed on the drawing. A Devonport Dockyard Pigeon Hole Manager of Constructive Department stamp is also printed on the plan. A Scott's Shipbuilding stamp, dated 7 March 1949 is also printed on the drawing. A Scott's Shipbuilding Principal Ship Overseer's stamp, dated 10 March 1949 is also printed on the plan. A Portsmouth Dockyard Manager of Constructive Department stamp, dated 15 October 1947 is also printed on the plan.

The drawing shows the sections at Frames 9, 18, 30, 42, and 65 looking forward. The drawing also shows the sections at Frames 83, 95, 109, 125, 137 and 147 looking aft. The drawings shows modifications in green ink, made only to Thule at Chatham Dockyard , dated october 1946.. The plan shows modifications made at Scott's Shipbuilding & Co in Greenock, in burnt sienna ink dated January 1949 during Thule's refit. The maker's signature is in the bottom left corner.