A roll film negative. On board the Tribal class type 81 frigate Mohawk (1962) in Portsmouth Dockyard. She was in a dry dock from 21 March to 11 April 1972 when she moved to the South Railway Jetty. In the operations room between 41½ and 45½ stations on 1 deck. The photographer is looking aft from the starboard side at the forward end of the room showing a command visual display unit to the right of a ventilation trunk and the main plotting table to the left of the trunk.