A 35mm roll film negative. On board the Rothesay class type 12 frigate Rhyl (1959) in Devonport Dockyard. In the switchboard room on the starboard side of 2 deck between 31 and 32¼ stations. The photographer is looking to starboard from the door showing banks of rectifiers on the left and fuse panels on the right. A radiator and a tannoy are on the ship's side. The photograph was taken prior to 9 May 1972.