Scale 1:96 and 1:1. Plan shows the datum planes, lines and datum and bench marks, as fitted for the Tribal class frigate Gurkha (1960). There is a Thornycroft builder's stamp, dated 15 May 1963 printed on the plan. A second Thornycroft stamp, dated 30 April 1963 is printed on the drawing. Due to the copying process, the plan is clearer on the reverse side.