Scale 1:48. A copy of a modernisation drawing, showing the inboard profile, plan view and sections, illustrating the docking arrangements, as fitted of the A class submarine Alliance (1945) A Devonport Dockyard Manager of Constructive Department stamp, dated 14 October 1966 is printed on the plan. A portsmouth Dockyard Manager of Constructive Departemnt stamp, dated 31 October 1966 is also printed on the drawing. Modifications made in brown ink at Portsmouth Dockyard, dated March 1968, are shown on the plan.