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 GWS21 L.M.A. between 64½ and 66½ stations on the starboard side of 1 deck. The photographer is looking forward from inside the doorway. Against the forward bulkhead are a testing unit on a bench on the left and a rack stowage unit is under a benc on the right. A large ventilation fan motor is under the deckhead.