The Ultrasonic Antifouling device has been in use on a number of yachts since 2006, one of which is an aluminium hull. It has only just become commercially available now that there is proof that it works. In fact the system is very simple.. A transducer is fixed to the inside of the hull and a control box sends pulsed ultrasonic signals to it. In turn the transducer emits a series of low power, low frequency (in ultrasonic terms) sound waves, which create a micro environment across the hull surface that Algae and barnacles cannot live. Therefore the hull stays clean.
If the hull already has barnacle growth, it will have to be removed physically. With algae , on the other hand, it will displace it as you move through the water. Better that you start with a clean hull.
Of course other benefits will include, not having to continuously clean your log/paddle wheel .. it will also keep other underwater gear such as props and water intakes free from fouling.
As a result of having a cleaner hull, you will maintain better speeds on passage and of course save fuel.
For more information you can contact www.sonic-marine.co.uk