No. 6 [Main] Deck, location 6NZ0. Interior of the NBCD [Nuclear/Biological/Chemical Damage Control] Headquarters no. 1, looking to port. The picture is dominated by a large reference board which diagrammatically shows the arrangement of the ship's pumping and ventilation systems.

This is part of a series of photographs taken during the final stages of HMS Ark Royal's last major refit which was completed in 1970. The location references are derived from the deck plans in the latest edition of the ship's NBCD book.