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 in the operations room between 42 and 45½ stations on 1 deck looking aft from 43 station on the port side showing the JW LAP table in the foreground with the RWA circuits teleprinter and table and a visual display unit against the port bulkhead. Six resistance boxes, a marker generator power cabinet, a junction box and a relay unit are against the aft bulkhead. On the left are an Admiralty Research Laboratory plotting table and a visual display unit. A vertical format negative.