FAQ – Ultrasonic Anti-fouling Questions & Answers

Hull Shield works on all boats that do not have wood within the hull layers.

Yes. Hull Shield systems must operate continuously to maintain protection against marine growth.

No. Hull Shield functions as a deterrent and preventing new fouling from attaching or spreading on the hull surface. The hull must be cleaned prior to installation.

Less Frequently. Hull Shield systems function to extend the time between hull maintenance and cleaning.

Yes, Hull Shield systems are designed to integrate into your existing boat battery system.

No. Hull Shield transducers are isolated from all other parts of your boat while also operating with AC (alternating current) which will not functionally produce sustained electrolysis reaction.

No, the ultrasound produced by Hull Shield is perfectly safe for your boats structure and will not cause any damage or harm to your boat.

Hull Shield functions by producing ultrasound which cannot be sensed or heard by people. You may hear a slight clicking sound when very close to a transducer. A click is produced after a frequency transition and confirms the transducer is operational.

No. Hull Shield systems do not require any through-holes to install. Boats that contain composite or foam cores may require removal of the foam layer depending upon the installation method.

No. Hull Shield systems draw very little current and will operate on battery systems connected to standard battery maintainers and trickle chargers. Systems can also be sustained with Solar and Wind power.

Yes. Hull Shield can be operated on battery systems sustained by solar power. The solar system must be able to sustain a continuous 1-2Ah draw, even during periods when the solar panels are not charging the batteries.

No. Hull Shield systems monitor the available battery voltage and adjust current draw based on available supply. The system will automatically switch to a “no-drain” sleep mode when battery levels dip below 50% capacity.

This depends on your circumstances. Hull Shield functions the same whether you have bottom paint or not – by extending the time required between cleaning. Hull Shield systems, when used in conjunction with a soft ablative bottom paint, will require less maintenance and cleaning than if no bottom paint is used. Boats using Hull Shield without bottom paint will still benefit with extended periods between cleaning compared to having no-protection, however removal of fouling will be more difficult. Having a bottom paint coating, even a non-toxic paint, will limit staining, fiberglass blistering, and aid in the easy removal of any accumulation.

Yes, Hull Shield functions as a deterrent of future growth – it will not retroactively remove existing barnacles or fouling. Please note that small barnacles can survive up to a month while out of the water. It is imperative that all barnacles are completely removed from submerged surfaces to ensure proper results.

Absolutely not. Hull Shield operates by producing ultrasound pulse that are then absorbed into the hull surfaces. Hull Shield will not interfere with marine fauna that is not in direct contact with the boat hull.

No. The hull surfaces must be able to conduct the generated ultrasound. When the hull is grounded, the ultrasound will be absorbed into the ground. More importantly, barnacles and other marine fauna are concentrated on the sea floor, thus creating an ideal environment for infestation.

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