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 communications control room (receiving) between 41 and 43 stations on the port side of 3 deck. The photographer is looking forward from the port side at the aft end of the compartment showing a group of electronic units on the left with one of the receiver units pulled out for maintenance. An aerial selector switch and receiver units are on the right. A vertical format negative.