3M - Multi-Purpose Boat Soap - 16 oz. - 090343M Multi Purpose Boat Soap 16 oz. 09034 Our 3M Perfect It Boat Wash is an important first step in achieving a truly professional gelcoat finish. This high suds formula works without stripping wax, removing grime, algae, dirt and other common marine contaminants to create a clean, clear surface for refinishing. In fact, it works on every boat surface from bow to stern. And its concentrated formula requires only 1 oz. per gallon. Cleans grime, algae,