A 2¾ x 2¼ film negative. On board the Type 12 frigate Yarmouth (1959) alongside the South-West Wall in Portsmouth Dockyard. Inside the amplifier compartment on the port side of 2 deck between 33 and 34 stations. The photographer is looking to port and slightly forward from the doorway. A desk containing six drawers has a telephone switchboard on it and under the desk is a large wooden packing case with the instruction 'Do not remove test & tuning equipment'.