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 No. 1 amplifier compartment between 37 and 41½ stations on the starboard side of 1 deck looking to port from the starboard side showing three power units and a GDS.5 Mark 78 (gun direction system) amplifier assembly against the aft bulkhead. A T.I.U. Mark 5 (target indicating unit) maintenance console, a wooden workbench with cupboard under, a telephone and an automatic emergency lantern are against the port bulkhead. Retransmission cabinets B, A and C are against the forward bulkhead. A vertical format negative.