A 35mm roll film negative. On board the commando carrier Hermes (1953) in Devonport Dockyard in June 1973 towards the end of her conversion from a fixed wing aircraft carrier to a commando carrier. She recommissioned after conversion on 18 August 1973. The photographer is in the N.B.C.D. headquarters on 5 deck to starboard of the centreline between 116 and 123 stations. He is looking forward and to port showing the main electrical supply system panel on the port bulkhead on the left. An automatic emergency lantern is to the left of the door and suspended from the deckhead is an empty brass cartridge case. A vertical format negative.