Scale 1:144 for the longitudinal measurements and 1:192 for the vertical measurements. This mix of scales result in a distorted diagrammatical view of the decks. Plan shows the incident board for all decks, as fitted on the Blackwood class frigate Russell (1954). 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.