On board the Type 12 general purpose frigate Plymouth (1959) alongside the south side of number 3 basin in Chatham Dockyard at the end of a modernization which commenced in August 1966. The ship is berthed starboard side to the quay. The photographer is in the main communication office between 32½ and 35 stations on the starboard side of 2 deck looking forward and to starboard showing Bay No. 1 fitted with a D/F receiver F.M.B. in the left foreground, Bay No. 2 fitted with a B40 CAY receiver, a CAZ receiver and an Olivetti 82 typewriter. Other bays are fitted with Powquip teleprinters. A key cabinet and a clock reading 10.07 are against the ship's side. A vertical format negative.