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 looking forward and up from the starboard side of 1 deck at 59 station showing the hangar exhaust terminals at 57 station on 01 deck. The doors are open. Landing lights are hung below 02 deck The door to the torpedo maintenance room on 1 deck is open and and men are working in the compartment. A vertical format negative.