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 sonar instrument compartment between 16 and 28 stations on 3 deck looking forward on the starboard side from 26 station showing the hand winch next to the hatch of the hull outfit 19 (sonar type 170) and a CO² fire extinguisher on the left with a standard electronic cabinet in the left foreground. Against the ship's side are a receiver/amplifier and sonar cabinets 5, 6 and 7. Two cabinets for electronic first aid units are against the forward bulkhead. A vertical format negative.