Dutch BMS Towing chooses green antifouling solution. Maritime Technology Company Micanti has applied its patented non-toxic antifouling on the tug Willem-B Sr. Thorn-D is an adhesive foil with fibers that creates a textured surface. Instead of killing marine growth the textured foil is preventing it from attaching itself to the hull of a ship. Thorn-D is set to replace the generally used chemical coatings on hulls of ships. Willem-B Sr is owned by BMS Towing and mainly operates in the Netherlands for towage and salvage services. Dr. ir.