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 auxiliary machinery compartment between 62 and 68 stations below the main flat looking aft and to starboard from the starboard side at 67 station showing the gyro compass master transmission unit, the gyro compass repeater panel and two telephones against the aft bulkhead. A pacitor contents gauge rectifier unit, a type QM10 receiver tagboard and a Decca Navigator receiver mark V type 133, manufactured by the Decca Navigator Co Ltd of London, are against the boat's side. A steel desk/worktop is in the foreground. This image is very similar to negative number N69573.