Placed at The Bullnose, overlooking the Humber Dock Basin. Now the entrance to the Marina, this is where ships would wait for high tide before entering the Humber Dock.
Nearby is a sculpture remembering the 2.2 million people who passed through Hull between 1836 and 1914 on their journey from Northern Europe to America. They would arrive by boat before continuing on to Liverpool by train and finally boarding a ship to cross the Atlantic.
You are looking for a magnetic nano tube.