Scale 1:12. An ozatrace copy of a plan shows the incident board sizes for the aircraft carrier Hermes (1953). 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 created during Hermes' Landing Platform Helicopter conversion between 1971 and 1972. This plan is noted as Sheet 6 of 6 and was drawn by A. M. Knapman [Draughtsman at Devonport Dockyard flourishing 1973].