Scale 1:48. Plan shows the port inboard profile looking from the starboard side and the sections of the Thames class submarine Thames (1932). A Vickers Armstrong Ltd builder's stamp, dated 4 October 1932 is printed on the drawing. A Vickers Armstrong Admiralty Overseer's stamp, dated 9 December 1932 and bearing the signature of W. H. Jackman [Overseer at Vickers Armstrong Ltd flourishing 1932] is also printed on the plan.