I’ve just taken the plunge and bought Ultrasonic Antifouling for my Botnia Targa 31. I’m guessing there must be some interest in this type of anti fouling solution and how well it works locally with the paints getting less effective by the year it seems.
I bought the Ultra 10 from Ultrasonic Antifouling ltd of Poole, it’s not a cheap solution to fouling. They advised me a 1 transducer device should be enough for my boat if fitted close to the transom near the centre line. They told me it should work really well on the boat as it has a solid GRP hull ie not a sandwich construction but there would be limited protection for the legs due to the ultrasonic losses between the hull and the legs but that the most protection for them could be obtained by fitting the transducer close to the transom.
My boats on a swinging mooring but I have a 200watt solar panel fitted which I calculated will have easily enough power to run the Ultra 10 except possibly in December and January.
I’ll post updates on how the install went how well it works.