According to the lockkeeper, the last time a boat was on the gridiron was around the year 2000. He thought it might have been either the PS Waverley—a still-running paddle steamer I'm dying to have a go on at some point!—or the MV Balmoral, another vintage excursion ship. He had a recollection of the Balmoral needing to free something that had got tangled around its propeller.
Before then, he remembered the ship Samuel Plimsoll being on the gridiron in 1998.
GPS Coordinates:
51.44902, -2.62410
Location: Hotwells