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 bridge between 27½ and 31½ stations on 01 deck looking aft from the starboard side showing a CO² fire extinguisher, an electric fire, a fuse panel, the fleet disposition board, a Decca radar power unit, a Decca radar receiver unit, a Decitron amplifier and a junction box. The door to the bridge wing is closed and in the foreground is the handrail surrounding the hatch down to 1 deck.