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 mortar handing room between 67¼ and 71 stations on the port side of 2 deck looking aft from 68 station showing the power rammers on the left. Against the ship's side on the right are a junction box, the depth setting control panel terminals and fuses, the contact heater transformer, the charging and distrubution panel and a chamber rod and brush stowage unit. A vertical format negative.