• How to clean a boat hull

How to clean a boat hull

A boat hull is the watertight body of your boat or ship. It’s the barrier between the boat and the water and therefore is heavily exposed to water and air. Over the course of time, these elements cause oxidation, wear and barnacle growth on the boat hull. Learning how to clean a boat hull will help you preserve the value of your vessel and enhance its performance. In addition, a clean boat hull enhances the performance of your boat, which makes it go faster.

How often should you clean a boat hull?

Experts recommend cleaning your hull several times a year depending on how often you use your boat. It’s always better to clean your hull before it shows heavy wear, even if that means you’ll have to clean it more often.

How to clean a boat hull

Now to the really important part: You’ve detected corrosion, barnacle growth, algae and other wear on your boat hull. What should you do to clean it?

Scuba divers

You could hire a professional to clean the hull. There are scuba divers that clean boat hulls while the boat still lays in the water. This brings the advantage of not having to move your boat out of the water. These scuba divers can reach all the right spots from beneath the water surface. However, hiring a scuba diver for this job can be pretty expensive.


Another way to let the hull get cleaned by a professional is by sandblasting. Sandblasting is a thorough way of cleaning your boat and preparing it for new paint. It is also known as abrasive blasting and is the operation of forcibly propelling a stream of abrasive material against the hull surface under high pressure. It’s highly effective, but comes with a price too. If you want to know more about sandblasting, take a look at this article we wrote.

TERCOO® Rotating Blaster

If you want to clean the boat hull by yourself we’d recommend the Tercoo rotating blaster. Tercoo® is a natural rubber disk with 12 hard metal tips that create a ‘hammer effect’ during operation. This movement ensures that the tips clean the surface perfectly, removing all contaminants and other old coatings. It’s the easiest way to clean the boat hull without the help of a professional and at lower cost. You can buy this product at several boat shops.

Soap, acid and other detergents

Last but not least, you could clean the boat hull with soap, acid and other detergents. There are even some hull cleaners for boats on the market. Mix the product of your choice with water, cover the hull surface with the help of a sponge and rinse of with a power hose.
This is a very labor intensive method, that will cost lots of time and energy. The effect will be less than with any of the above methods. We would only recommend this method in case of very little wear and mostly for cleaning of dirt, algae or mold. You won’t get rid of heavy corrosion with just soap.