On board the submarine Walrus (1959) alongside the fitting out berth at Scott's Shipbuilding & Engineering Co Ltd shipyard at Greenock, on the Clyde. The photographer is in the main motor room between 92 and 103 stations on the main flat looking to starboard from the walkway at 99 station showing the main power switchboard and control station manufactured by The English Electric Co Ltd. Under the deckhead are a number of units including the battery hydrogen clearing fans running unit,a stop snorting unit, the aft service seawater circulating pumps lampbox, two microphones, a loudspeaker, an isolating switch for main motor grouper telegraph buzzer, a stop snorting buzzer and a main motor telegraph relay box. A vertical format negative.