The Type 12 frigate HMS Londonderry (1958). In the GWS 20 missile power room between 47¾ and 51¾ stations on the starboard side of 1 deck.

On board the Type 12 frigate HMS Londonderry (1958) alongside the west wall in the basin at Rosyth Dockyard, near the end of her modernization which commenced 7 July 1967 and completed 28 January 1970. The photographer is in the GWS 20 missile power room between 47¾ and 51¾ stations on the starboard side of 1 deck looking across the compartment showing a DC rectifier and two junction boxes on the left. A support frame on the right has a rectifier on the right side and a motor generator and control panel on its left side. In the background are a transformer and a combination safe.