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 hangar between 72 and 75 stations on 1 deck looking to port from the starboard side showing the large chains fore and aft which controlled the helicopter lift. A similar pair of chains were on the starboard side.