Answer
-antithrombic paints can be used.aquaterras 1000 made by Nippon,biocide free self polishing antifouling pait.theultra low friction antifouling paint A-LF SEA,
-maintaining precise, stable and sustainable antifouling performance
-improved operational efficiency
-environmental protection.
-to develope new antifouling paint
Nanotechnology -self polishing antifouling paint combining both hydrophilic(helping hydrolysis to occur on paint -resistance in friction)and hydrophobic (prevent adherence to the marine growth)in nano structure.