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 passageway between 15 and 16 stations on 2 deck looking forward and to starboard through the open watertight door at 16 station showing a fire main and a fire hose basket, two starter panels manufactured by Allen West & Co Ltd of Brighton and a change over switch panel. A vertical format negative.