On board the type 81 general purpose frigate HMS Tartar (1960) in Portsmouth Dockyard between November 1973 and April 1974 during a refit. In the main communications office between 41 and 45 stations on the port side of 2 deck.

On board the type 81 general purpose frigate HMS Tartar (1960) in Portsmouth Dockyard between November 1973 and April 1974 during a refit. The photographer is in the main communications office between 41 and 45 stations on the port side of 2 deck looking to port from 42 station showing the machine crypto bay with a paper shredder on it and with six R.W.A. circuits switch units and BID 150 No. 1 and BID 150 No. 2 power units above it.