The County class guided missile destroyer London (1961) in a dry dock at the Neptune Works of Swan, Hunter & Wigham Richardson Ltd at Wallsend-on-Tyne. The photographer is standing on the floor of the dock looking forward and to port showing the main circulating discharge between 104 and 106 stations on the starboard side of the hull close to the keel blocks. Two men in overalls are holding a scale stick against the hull.