Drawing not to scale. Plan shows the incident board for all decks of the Rothesay class frigate Brighton (1959). 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. A Yarrow & Company builder's stamp, dated 15 January 1962 is printed on the drawing. A Yarrow Admiralty Construction Overseer's stamp, dated 16 January 1962 is also printed on the plan.