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 from 34 station on the port side showing a distribution box and three switch/control units against the aft bulkhead. The fire control MRS 3, Mod 3 junction box 6 and two small radasr junction boxes are against the port bulkhead. A vertical format negative.