Fontinettes Boat Lift
The Fontinettes Boat Lift (Ascenseur des Fontinettes or Ascenseur à bateaux des Fontinettes) was built in 1887-8 on the Canal de Neufossé and connected the river Aa and the Neuffossé Canal in Arques, near Saint-Omer in the Pas-de-Calais.
It was designed by Edwin Clark (who also designed the Anderton Boat Lift) [and M. Bertin? M. Gruson?] a French engineer.The structure was constructed by the Société des anciens établissements Cail.
The above information is condensed from the Wikipedia entry, accessed 31 Dec 2023.
The diameter of the ram, which is cast-iron, is 2 metres and the length of stroke is 13.13 metres (43 ft.) [1]
The lift is preserved, but no longer operational.