Scale 1:48. An ozatrace copy of a plan showing the No. 2 [main], 3 [lower] and 4 [hold] decks, as fitted of the Rothesay class frigate Londonderry (1958). The drawing illustrates the ventilation arrangements on these decks. This plan is noted as Sheet 1 of 2 and was modified at Portsmouth Dockyard in March 1973.