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 in the sonar instrument compartment between 12½ and 16 stations on 3 deck looking forward and to starboard from 14½ station showing A/S cabinet No. 5 on the extreme right with a wooden spares cupboard and an electronic test cabinet next to it. On the left are fresh air downpipes and a natural exhaust pipe serving No. 2 naval store on 4 deck. A stool in the foreground has a cabinet front panel laying on it. A vertical format negative.