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 to starboard and aft showing an electric fire on the extreme left with the GWS 20 junction box 1 and the gun direction junction box 5 above it and to the right. On the right are GWS 20 voltage control monitor above a cupboard with a combination safe on the extreme right.