Almost identical to SJ3389 : Albert Dock scene, Liverpool, taken nearly three years earlier. In the foreground is the capstan for the swing bridge across the dock entrance; both bridge and capstan were made by the Haigh Foundry of Wigan in 1842-3, and designed by Jesse Hartley who also designed the warehouses in the background (SJ3489 : Merseyside Maritime Museum, Albert Dock, Liverpool).
SJ3389 : Level indicator, Albert Dock, Liverpool I believe one of that octagonal buildings is a modern replica to house modern lock gate machinery/controls. There is an apocryphal story that English Heritage saw this said "oh dear we've missed one" and had it listed. True or false?