A 35mm roll film negative. On board the Rothesay class type 12 frigate Rhyl (1959) in Devonport Dockyard. In the mortar projectile room on the port side of 3 deck between 62½ and 68 stations. The photographer is looking forward and slightly to starboard from the starboard centre of the room showing a close-up of the control valves for the fire main. The projectile stowage racks are on the left. The photograph was taken prior to 9 May 1972. A vertical format negative.