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 aft A/S metadyne compartment between 73 and 78 stations on the port side of 3 deck looking forward from 75 station showing a small workbench on the left with an electrical unit above and a two drawer filing cabinet, a box and another electrical unit forward of it. On the forward bulkhead is a rectifier unit and a unit manufactured by Metropolitan Vickers Electrical Co Ltd.