On board the Type 81 general purpose frigate Eskimo (1961) in No. 3 basin in Chatham Dockyard during her 1971-1974 modernisation. The photographer is in the sonar instrument compartment between16 and 28 stations on 3 deck looking aft from 19 station on the starboard side showing a hoisting winch in the right foreground and beyond it are three standard electronic cabinets. Against the starboard side of the ship are a receiver/amplifier unit and sonar cabinets 5, 6 and 7. A pile of tool boxes and stores boxes are against the aft bulkhead and an electric fire is behind the stack of stores boxes. A vertical format negative.