I think the data they can give you is the minimum vertical distance between the surface of the water and the lowest part of the bridge in the...
Maybe you have some info about here http://www.european-waterways.eu/e/info/france/seine_aval_de_paris_a_la_mer.php
Thank you Manfred.
Ben Schmidt has many other interesting videos.
Ben Schmidt https://www.youtube.com/user/BGMSMA
I'm looking for plans and doc for building a Buc 24. Does anyone know if OS 7 still have them available? Thanks in avance.