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 generator room 'snake pit' between 77 and 81 stations below the main flat looking forward and to starboard from 80 station on the centreline showing the C6D/2 combined lub.oil and fresh water pump in the left foreground. To the right is a pair of Vokes of Guildford lub. oil filters. Four handwheels marked "F.W. priming PP suction (G)", "F.W. hand PP suction (D)", "L.O. priming Std (H2)" and "L.O. transfer (G2)". A vertical format negative.