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 auxiliary machinery and gland space (thrust block compartment) between 103 and 107 stations below the main flat looking into the port forward corner from 104 station showing the port propeller shaft thrust block with a large air bottle against the boat's side. Storage units are at high level against the forward bulkhead at 103 station. In the left foreground is the ladder leading up to the aft accommodation space on the main flat. A vertical format negative.