Hempel's Classic antifouling paint () is perfect for boats operating mainly in cold waters and can reduce fuel consumption by 4%. The formula can cover 11 metres square per litre and will take four hours to dry if applied at 20C. Drying times double at a drop of 10C and halve at a rise of 10C. You can apply the Hempel antifoul () via a spray (professional use only), a roller or a paint brush. If you are using a roller or a paint brush more coats may be needed to achieve the correct thickness.