Scale 1:48. An ozatrace copy of a plan showing the No. 3 [lower deck] and 4 [hold] and 5 [hull bottom] decks, as fitted of the Rothesay class frigate Londonderry (1958). The drawing illustrates the main suction, main service and sanitary service on those decks on Londonderry fitted as a trials ship. This plan is noted as Sheet 5 of 5.