The French are mostly interested in your ICP rather than ICC and if your VHF
certificates are in order.
For a while, there was an obligation in Belgium to have two VHF's on board. They have lifted this obligation for visiting yachts of non-residents.
The mix between European ruling and local laws makes it often impossible to comply, so the French prefer to looking only for the obvious.
Although very strange things can happen. Recently a Dutch (professional) skipper
was lifted from his vessel because he spoke "insufficient" French, according to the feelings of the French authorities.
What happened in real was that the Dutch RP (police of the inland waterways) picked up a French skipper
and chained his vessel because he could not make himself "understandable". Of course a ridiculous action in a so-called United Europe
. But the actions of retaliation of the French were immediate and on spot.
The daughter of the Dutch skipper who was fluent in French had to come to liberate her father.