A 2¾ x 2¼ film negative. On board the Type 12 frigate Yarmouth (1959) alongside the South-West Wall in Portsmouth Dockyard. On the starboard side signal deck on 01 deck between 30½ and 39 stations. The photographer is looking aft from abreast the base of the MRS3 director. On the left is the air treatment unit with the canvas fronted flag locker beyond it. On the right is the watertight door to the rocket ready use magazine.