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Monday, July 1, 2019 

In close communication with the Dutch Ministry of Infrastructure and Water Management, Hydrex has developed a method to clean propeller blades underwater by buffing rather than grinding, which has led to the company receiving permission to clean propeller blades in the Netherlands and Belgium.

According to Hydrex, the traditional approach in the propeller maintenance industry is to polish the blades with a grinding disk which can be quite damaging to the propeller. By the very nature of this method, a substantial amount of metal is removed from the blades. This makes polishing a source of marine pollution which is a problem in ports.

It is for this reason that a large number of ports, including those in Belgium and the Netherlands, have banned underwater cleaning of propeller blades. Exceptions are only made for companies that can pass the stringent tests carried out by the concerning authorities.

Approved propeller blade cleaning is carried out by Hydrex divers using underwater buffing equipment developed in-house by the Hydrex R&D department. This process is said to be fast and easy and has no effect on the underwater environment.

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