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 at 26 station on 2 deck looking to port showing the emergency diesel generator and its starter panel against the port bulkhead. The door to the CCR (RX) (communications control room (receiving)) is on the right with two filter boxes on one side of it and a damage control locker and portable pump on the other side.