Scale 1:48. Plan shows the sheer lines, longitudinal half breadth, body plan and offsets table design drawing for the Blackwood class frigates. The title of the drawing is "A/S Frigate 'Blackwood' class [FSB] 1951/52 Programme". The 'FSB' abbreviation in the title is likely to stand for 'A/S Frigate, Second Rate', since the Blackwood class were second rate anti-submarine frigates. The plan bears the signature of Sir Charles S. Lillicrap [Director of Naval Construction 1944-1951]. This plan relates to all vessel in the Blackwood class but the dimensions stated on this plan do not match those that would be used when the class was fitted out.