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 operations room between 31½ and 35½ stations on 1 deck looking to port and slightly forward on the port side showing the gun direction officer's position in the foreground. Against the port side are two JDA display power units, and the Elliott Bros (London) Ltd T.I.U. (target indicating unit) Mark 5 cabinets B and C. Against the forward bulkhead is the Co-ordination plot and tote board.