This tool should be used as a guide only. Seaforce 30M Red may not be an exact match for Hempel's Antifouling Olympic 86900 by but we have given the closest match we can. Seaforce 30M Red should do the same job and have similar properties but you should always read the technical data sheets for both Seaforce 30M Red and Hempel's Antifouling Olympic 86900 to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.