After several years of research the firm ANFIBIA SUB is able to perform cleaning and descaling of propellers of any size with futuristic methodologies and techniques.

Needless to say, the whole operation is performed underwater without the necessity to have the boat or ship beached, which reduces the costs without compromising the results and furthermore remaining in a sustainable system for the environment. It is estimated that the braking agent, given by fouling by algae or small mollusks decreases the ability of the motors up to a significant percentages and goes so far as to decrease the speed and increase the fuel consumption with an additional wear of engine.

 

Anyone who owns a small or big boat knows that if one doesn't run a maintenance of the submerged part of the boat for a long time, problems are likely to arise. Reduction in speed, increased fuel consumption and engine wear are a big problem, but can be easily solved. It's not very different from dental prevention which, if correctly applied, eliminates various dental problems. The only difference are the costs. As a matter of fact, the costs of dental prevention eliminates future expenses of the dentist, but in our case the saving is immediate in the form of fuel economy and reduced engine wear. And the proof of all this is when motors start to make smoke a lot due to the stress.

The process we adopt avoids the operating diver to perform strenuous handwork and reduces the pollution of the water surrounding the propeller, thanks to a hydraulic power unit, which is the motive power of the entire machinery, and a rotating brush equipped with non-aggressive fibers for the various types of metals and even wood. In addition to this a PVC pipe with a buoyancy is connected to the rotating brush and thanks to a vacuum pump the dirty water is sucked into a mechanical purifier, which is able to retain particles up to 20 micron.

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UNDERWATER CLEANING FOR PLATFORMS

We also have brushes with various types of fibres for pipes and trestles or platforms, depending on the state of the surface to be cleaned, such as the discut, which is able to clean surfaces with 10 cm of fouling. The brushing machine can adapt to any surface: large or small pipes or base pylons for platforms.

This kind of operation has really important applications. The innovation lies in the fact that we can do it underwater which is also the reason this brings better results than on dry land due to constant temperature.

Propellers wear for various reasons. Whether they are used a lot or very little, wear advances because of galvanic currents (even if protected by a suitable anode or zinc), because of the high abrasion friction with water and due to salt water which is is by nature a big corrosive.

The wear manifests itself as tiny holes and lines on the surface of the propeller, which reduces the efficiency over time, but even worse they causes new grips for vegetation and crustaceans, which increase their colonization of the surface. Moreover it causes micro cavitations and resistance against water even if when the propeller is clean.

For this reason we have adopted a suitable equipment to regenerate every kind of propeller.
The operation begins with the cleaning of the propeller to see which parts are the most worn. Then we carry out a diagnosis of the entire propeller which is divided with a suitable marker into different parts, from the most worn (usually the ends that cut the water) to the less worn (usually the parts closest to the axis).Every single parts is then compared with a samples of wear and cataloged. Thanks to a Roughness Comparator Scale we can comprehend the grade of wear and the relative treatment to use, which will be noted on a module. Once the propeller is divided into sections of wear, it is polished with suitable tool for the type of wear itself and every section will receives a different treatment and this allows to regenerate the propeller uniformly as if it were a mirror.

Boat propellers vary in dimension according to the vessel. Our equipment can handle every time of propeller from little boats to cruise ships.

The boat owner who decides to perform an underwater cleaning or regeneration of the propellers gets a saving on fuel costs and engine wear caused by the engine trying to maintain cruising speed with an inefficient propeller.
No one is better than himself in reckoning in his own pocket. You can ask for a free quotation via email. Even if it is a complicated task, prices are very competitive due to our experience and equipment

IF YOU WANT TO KNOW MORE CONTACT US WE ARE AT YOUR COMPLETE DISPOSAL