What are the symptoms that my boat needs repairs? Reapply this paint each 1-3 years, according to your boat's environment and usage. Antifouling paint aids in preventing marine organisms from adding to the hull. For https://www.facebook.com/profile.php?id=61560585433049 boats stored in drinking water, bottom painting is essential. "A clean hull can boost energy effectiveness by up to 30%," says John Smith, a marine engineer with 20 years of...