StoneRoad2013's photos with the keyword: derrick

Somewhat rusty remains of a crane, probably dates from WW1 or WW2. Would have been used for unloading shells or other stores. There is also a short section of track [similar gauge to the funicular]. It looks like modern concrete has been added to level some areas of the pier surface, probably to make embarking and disembarking from the ferries somewhat easier. Quite a significant drop at low tide and there are a couple of other jetties nearby.

Looking along part of the marina that is now in part of what was Gloucester Docks. Note the crane and the converted warehousing around in the background.