On board the County class guided missile destroyer London (1961) alongside the fitting out berth at the Neptune Works of Swan, Hunter & Wigham Richardson Ltd at Wallsend-on-Tyne. The ship is berthed starboard side to the quay. The photographer is in the Seaslug missile check room between 71 and 83½ stations on the centreline of 2 deck looking aft and slightly to starboard from 72 station showing Seaslug drill missile SVCG coded SE38 in the starboard cradle. A nitrogen cylinder, a nitrogen charging and test panel and two CO² cylinders are against the starboard bulkhead. In the left foreground is the lobby to the Seaslug test equipment room and in the lobby is a box containing Oldham lamps.