Re: canal des deux mers (Canal of the two seas)
For a start I would make sure we are all talking about exactly the same route. My experience was only one section of the Canal du Midi and we were told it was 1.5 m if you were lucky. This is of particular interest since our boat is 1.5 m, but I think we would have problems with our mast and the curved lock walls.
Heading back to Lake Ontario for this summer. Now in Bermuda and heading to Long Island Sound in the first week in May. Then on to the Hudson and the Erie Canal.