Scale 1:144. A dyeline copy of a plan showing the incident board for No. 01 [boat deck] No. 02 [bridge], No. 1 [upper], No. 2 [main], No.3 [lower] and No. 4 [hold] decks for the Tribal class frigate Zulu (1962). This panel would be on the wall and would light up if an incident (such as fire, flooding or a injury) was reported in a specific location on board. This drawing was drawn by D. Langskaill [Draughtsman at Rosyth Dockyard flourishing 1974].