Scale 1:96 and 1:48. An ozatrace copy of a plan show the profile, No. 3 [lower] deck , tank top and sections, as fitted for the trials vessel Whitehead (1970). This drawing shows the vessel during its 1985 refit with further modifications made at Rosyth Dockyard, dated August 1985. This plan is noted as Sheet 2 of 2. A Scott's shipbuilding builder's stamp and a Principal ship overseer stamp, both dated 9 June 1971 are printed on the drawing.