Scale 1:24. Plan shows the plan view and sections, as fitted of the L class submarine L6 (1918). A William Beardmore builder's stamp dated 3 December 1918 is printed on the drawing. A William Beardmore Overseer's stamp, dated 30 June 1919 and bearing the signature of W. Walland [Overseer at William Beardmore flourishing 1919] is also printed on the plan.