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.
Back to Grenada in early December. Not sure I will remember how to sail. Will spend the winter and early spring in the Caribbean and then head to Bermuda and the northeast US. Still trying to decide if we will bring the boat to Canada, either in 2015 or 2016.