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 to starboard from 44 station on the port side showing headsets hanging from the deckhead on the right. The asdic type 170 attacker unit is above two terminal boxes and a tannoy, which is mounted at deck level. The closed box above the attacker unit is the limbo control unit. Above the cupboard unit are the type 162 sonar recorder and transducer panels. State boards are on the left. A vertical format negative.