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 transmitting station annexe between 28¼ and 31 stations on the starboard side of 2 deck looking to starboard and slightly aft showing a trolley against the ship's side. A power distribution board MRS3 Mod 3, a contactor panel, a pulse synchronising unit and amplifiers are against the aft bulkhead.