A 35mm roll film negative. On board the Rothesay class type 12 frigate Rhyl (1959) in Devonport Dockyard. In the diesel generator compartment on 2 deck between 6 and 11½ stations. The photographer is looking to port and slightly aft into the port aft corner showing two large air receivers. A steel cupboard and four Teddington Autocontrols panels are against the aft bulkhead. The photograph was taken prior to 9 May 1972. A vertical format negative.