Have you contacted the Beneteau dealer in Vettre, Giramar AS? Of the three dealers in Norway, they seem to handle the sailboats. If they can’t order the fabric, they could at least put you in touch with the right department to deal with in France to find out more. A quicker idea might be to take a sample of the fabric to an upholsterer near you. They are likely familiar with a wide range of fabrics. They could probably identify it and get it, perhaps more cheaply. They might also have suggestions for material that would hold up better than the original and look nicer too. We have had good luck dealing with an upholsterer near us for fabrics for our boat.