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 enclosed bridge between 40 and 43½ stations on 01 deck looking forward and slightly to port from the centreline at 43 station showing the forward extension. An asdic type 177 repeater unit, a loudspeaker, an asdic type 177 attacker repeater unit, a telephone, warning lights and a Rev Table unit set to position Two are against the screen. The captain's high chair is in the foreground with the pelorus ahead of it. A vertical format negative.