Ultrasonic Antifouling SonicShield III + Installation Kit

£1,677.60 Inc. Vat

Ultrasonic Antifouling SonicShield III

1 x Intelligent Control Unit
3 x 50W IP69 Transducers
1 x 110-240V AC Power Supply Unit
1 x UK Plug
1 x EU Plug
2 Year Return to UK base Warranty

SonicShield II Installation Kit
* Required for installation
1 x 6M H05RN Silicon Transducer Cable with IP69 Plug and Play connectors
2 x 8M H05RN Silicon Transducer Cable with IP69 Plug and Play connectors
1 x 12v / 24v H05RN Silicon DC Power Cable
1 x Araldite Rapid Epoxy Kit
1 x Blade Fuse and Holder
1 x Installation Manual
Sandpaper, Gloves, Cables ties etc

  • Ultrasonic Antifouling SonicShield III

    • Quantity: 1
    • Price £1,335.50
  • SonicShield III Installation Kit

    • Quantity: 1
    • Price £62.50
  • Total: £1,398.00

12 in stock


Designed for boats with a LWL < 16 Meters.

The SonicShield system is the most powerful available due to the patented technology that controls the power to the transducers.

Control Unit
The SonicShield control unit will monitor the incoming power and will vary the output based on the power available. If a charging DC source is detected or if AC (Shore Power) is present the system will go into overdrive mode delivering up to 50% more power to the transducers

This system is supplied with 3 transducers, the intelligent control unit, DC and AC power supply and all of the equipment required to install the system.

The transducers at the stern of the vessel are located one port and one starboard, the exact location will be dependent on your boat type. The final transducer is located approximately 1/3 from the bow.  This will provide maximum cleaning to your propellers and rudder and bow thruster.

The system is easy to install a copy of the installation manual can be found here

Cables and Power
All of our cables are Marine Grade Silicon H05RN, Included in the package is two 8 meter transducer cable and one 6 meter cable.
One 12v / 24v DC power cable and one 110-240v power supply unit.

Extra Equipment
We include Gloves, Cable Ties, Epoxy and Sandpaper as standard. Please let us know if you think you will
need any additional extras.

The product is supported by our 2 Year Return to UK base Warranty.

Additional information

Weight 7 kg
Dimensions 50 x 27 x 15 cm
IP Rating

Control Unit IP63, Transducers IP68, Connectors IP68, Cables H05RN Marine Grade Silicon

Power Consumption

0.4 Amps/Hr Average. Variable 0.1 Amps/Hr Low Drive up to 1.0 Amps/Hr High Drive

Shipping Dimensions

6KG, 330mm X 300mm X 290mm

Product Dimensions

Control Unit 220mm X 150mm x 60mm, Transducer Height 65mm, Transducer Diameter 90mm

Power Supply

110-240v 3.75 Amp Power Supply, CE and UL Approved, UK and EU Plugs

DC Voltages

12v / 24v DC

Ultrasonic Frequencies

20-40 KHz

9 reviews for Ultrasonic Antifouling SonicShield III + Installation Kit

  1. Richard Vass

    This system works!
    We had the system installed after the first 3 months of sea trials of our new design, Gunfleet 58. There was some marine growth from this period, since removed. Since the sonicsystem was installed there has been no further growth!
    Richard Vass – Gunfleet 58 – Caribbean
    SonicShield IV (Sonicshield III with additional transducer)

  2. James Connelly

    Amazing after care
    After fitting the Ultrasonic system this project I was at once impressed with the efficiency of the system. clean, tidy, almost maintenance free and simple to use. but what impressed us most was the after care. ‘above and beyond’ to make sure the crew and owner were happy with the product. “Great Product! Great Service!”
    James Connelly – Baltic 107 SY Inukshuk – Med
    SonicShield IV ( x 2 SonicShield II)

  3. David Witham

    Excellent result!!
    We left the boat in the water for nearly 2 years without adding to the anti fouling.
    The boat was lifted, and was squeaky clean, apart from area of sonic shadow, like the back of the rudder, and under the fin.
    David Witham – Moody 38 – UK
    SonicShield III

  4. Mr O’Reilly

    Worked as well as expected
    The system was installed in March last year at the same time as it was antifouled, She has been berthed in Gibralta since.
    The vessel has no trace of fouling other than a very thin layer of slime. It has worked well as expected.
    Chris O’Reilly – Beneteau Sense 43 – Med – Gibralta
    SonicShield III

  5. Mr Beresford

    Just a layer of brown slime which came off with a hand wipe
    On the fouling front I am happy.
    To date I have kept in my speed wheel and it has not fouled.
    Also went under at weekend to change anodes and there just seemed to be a layer of brown slime which came off with a hand wipe.
    Andrew Beresford – Dufour 425 Grand Large – UK – Solent
    SonicShield III

  6. Mr Beresford

    Helping to weaken the bond with the hull of the existing fouling
    UPDATE:- System been on since about mid oct2104. Still not had to clean the speed wheel. When I fitted it I gave one side of the boat a scrub and left the other side for a comparison. The cleaned side has stayed pretty clean from what I can see. The uncleaned side had quite a weed hair along the waterline. This weekend took the boat out for 2 * 4 hour sails, having not been out in it since end of November. On return I noticed that most of the weed hair had gone.I guess that the ultrasonics are helping to weaken the bond with the hull of the existing fouling, such that a sail pushed the weed off.
    Andrew Beresford – Dufour 425 Grand Large – UK – Solent
    SonicShield III

  7. Mr Brockie

    “the sound of Silence”
    Hi Sam.
    Further to your phone call, I thought that I would put down in writing ,just how quiet your system is. After the system was fitted, I tried to hear the transponders ,and when I couldn’t hear them, I lifted the carpet, and the access hatch above. Listening carefully the only noise that I could hear, was like the very faint cheep. The two transponders are fitted either side of the double berth in the aft cabin, and it is impossible to hear them with the carpet in place.
    Iain Brockie – Hardy 42 – UK – Lowestoft

  8. Mr Watson

    Great product well worth the investment
    I am afraid to say that I will not be able to make Mr Barclays happy and request a refund from you.
    The sonicshield has worked wonders, the lack of weed on the boat – static for 6 months – has impressed me and several friends. When we took the boat out to sea recently most of it disappeared. Just needed to tighten the transducers after the run out as the vibration loosened them. In my view it is a great product well worth the investment
    Dom Watson – Tremlett Offshore 46 – UK

  9. Mr Charles

    I would highly recommend this product
    I chose SonicShield ultrasonic antifouling after being impressed with the almost clean Hull of a friends boat who had fitted it the year before. I fitted mine 3 months after my annual lift out and after 9 months we lifted the boat out to find a clean hull. What a difference compared to the thousands of Barnacles on my Hull the year before.. overall the service and technical knowledge received has been excellent and I would highly recommend this product many thanks to Sam and the team.
    Clive Charles – Humber 40 – UK – Southampton

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