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 transmitting station between 45 and 46¾ stations on the port side of 3 deck looking forward and slightly to starboard from just inside the door showing a call switch box and a junction box against the inboard bulkhead. The Admiralty fire control box Mk. 10, console Mk. 6, serial no. 122 and the application unit are against the forward bulkhead. Two chairs are facing the tunable echo unit in the left foreground. A vertical format negative.