At the end of the sailing season the topsides and waterline are often covered with algae, seaweed, oil residue and other contamination. If not removed quickly, this can cause permanent staining and even damage to the hull. Seapower Hull Cleaner effectively addresses all degrees of persistent contamination. The special formulation ensures quick and effective cleaning without attacking antifouling or waterline paint. Spray on, allow to react and rinse, its that simple.