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 aft control room passage between 69 and 77 stations on the main flat looking aft from 70 station showing the communications mast well on the left. On the port side on the right are two W.Cs, the officers washplace and a curtain on a rail to close off the control room. The watertight door in the bulkhead at 77 station is open. A vertical format negative.