On board the Type 12 frigate HMS Berwick (1959) alongside the south wall in No.3 basin at Chatham Dockyard, near the end of her modernization which commenced 4 December 1967 and completed 4 June 1971. The photographer is looking to port into the pyrotechnics locker between 47 and 48 stations on 1 deck showing the empty racks labelled capsules delay, cartridges signal brown smoke puff, cartridges illuminating 1½", cartridges signal red 1½", cartridges signal 1½ yellow, flare tracer and flares helicopter. A vertical format negative.