Description
Enjoy 24/7 antifouling protection with a Hull Shield HD1 antifouling system. Ultrasonic antifouling uses the power of ultrasound to keep your hull and running gear clean and free of marine fouling. Our systems offer a fully automatic solution that works around-the-clock to keep your boat clean so that you don’t have to.
Hull Shield technology has proven itself over and over again with years of reliable service to boaters the world over. Our products are the preferred choice for boaters wanting the absolute best antifouling solution available.
Maintaining a clean hull can dramatically increases performance, speed, and fuel efficiency. Keeping your hull clean with ultrasound also extends the life of your bottom paint. Layers of valuable paint are removed every time the hull is scrubbed or power-washed. Hull Shield can help to end this routine and destructive cycle. You will enjoy less maintenance costs, haul-outs, while extending the life of your bottom paint. With Hull Shield, you can be confident that your boat is operating at peak performance and efficiency.
HD Series
As part of the new HD series, the HD1 provides antifouling protection for hulls, drives, and other parts of a vessel that are prone to marine fouling. The HD series offers an increased efficiency profile that is capable of delivering nearly double the power directly to the transducers when compared to prior versions. Additionally, all HD series products feature our latest hardware technology that boosts overall effectiveness by utilizing a higher frequency bandwidth. HD series products also provide more than twice as many frequencies and ultrasound bursts in targeted ranges.
The HD1 is a single transducer unit that can be installed to protect hulls, drives, rudders, stabilizers, and more. This single transducer system can be combined with other systems to provide broad protection for vessels of any size. The HD1 facilitates an easier installation process compared to larger controllers when installing a transducer in an area where routing signal cables back to a larger central controller is impractical.
Drives, Rudders, & More
Not just for hulls – Hull Shield can protect your drives and running gear too! Drives are isolated from the hull by motor mounts, gaskets, seals and other insulative materials that block ultrasound from passing to shafts, props, and rudders. Because of this, the drive system requires dedicated transducers to gain the most benefit from ultrasonic anti-fouling. Inboards, pods, sterndrives, and sail-drives can all be fitted with a transducer to enable full anti-fouling protection. Rudders are isolated from the hull in the same way as the drives and also require a dedicated transducer.
Hull Shield Antifouling Technology
Ultrasonic antifouling works by using sound waves to physically repel fouling organisms away from the surface before they can permanently attach. As a bonus, the higher frequency band of ultrasound also disrupts the reproductive cycles of certain types of bio-fouling.
Hull Shield systems operate similar to a stereo and speakers. The controller sends ultrasound signals to transducers attached to the hull or running gear, the transducers receive the high-frequency signals, transforming them into ultrasonic pulses.
Each pulse creates a microscopic shockwave that runs across the hull and drive gear. These ultrasonic waves work to ablate, loosen, and repel fouling which is contacting the hull and drive surfaces. When used in conjunction with an ablative bottom paint, Hull Shield systems are the most effective and long-term antifouling solution available.
HD1 Controller Module
The compact HD1 controller is designed to be a low-power device that can be easily installed inline with a single transducer. HD1 controllers generate the ultrasonic signals which power the transducer and consume about 0.25Ah of current at maximum potential (when the battery system voltage is at or above 12.7V). The controller is to be mounted in an accessible location near a sufficient 12V battery system supply. The transducer signal cables are routed back to the controller.
HD series controllers operate on 12VDC battery systems. Please contact us for alternate options for 24VDC systems.
Single Ultrasonic Emitter
This system is equipped with one transducer emitter used to generate the ultrasonic signals which disrupt marine fouling.
Solar / Wind / Low-Power Mode
The HD1 controller is designed for optimum efficiency and ultrasound power delivery. The system is engineered to provide stable operation, even when powered from solar and wind supported power systems with fluctuating battery cycles. The controller will actively adjust the output power to match the current charge-state of the battery system – conserving power when necessary to preserve battery power and extend the length of time the system can operate.
The controller actively monitors system voltage levels which allows it to automatically enter power conservation mode (PCM) when the system batteries are not being maintained. PCM is a completely automated process which reduces the average system power consumption to as low as 5 watts depending on available battery power.
SLEEP MODE
The HD1 controller is designed for optimum efficiency and ultrasound power delivery. The system is engineered to provide stable operation, even when powered from solar and wind supported power systems with fluctuating battery cycles. The controller will actively adjust the output power to match the current charge-state of the battery system – conserving power when necessary to preserve battery power and extend the length of time the system can operate.
The controller actively monitors system voltage levels which allows it to automatically enter power conservation mode (PCM) when the system batteries are not being maintained. PCM is a completely automated process which reduces the average system power consumption to as low as 5 watts depending on available battery power.
Coverage
HULLS – each transducer provides approximately 200sqft of protected underwater surface area. A rough estimate of your underwater surface area can be calculated by doubling your draft, adding it to your beam, then multiplying by your LWL (length at water line).

DRIVES & RUNNING GEAR – one transducer can provide dedicated protection for any single isolated part. Examples of isolated parts are drive shaft & props, rudders, exterior engine brackets, struts, swim platforms, and trim tabs. Because these parts are isolated from the hull and each other, a transducer is required for each isolated part.

The HD1 Package Includes:
- 1x Hull Shield HD1 Control Module with Integrated Power Cable and 5ft of integrated Signal Cable
- 1x Submersible Ultrasonic Transducers with 15ft of Cable
- 1x Epoxy Kit
- 1x Printed Installation and Operation Manual
Easy Installation
Hull Shield systems are simple in function and installation. Systems can be installed in a single day and require no technical skills. Besides the simple tools most customers have, everything required for an installation is included in with our products.
The Hull Shield controllers are best mounted in an accessible compartment. The transducers are simply attached directly to the surface of the hull or drive with the supplied 2-part epoxy.
Hull Shield transducers are waterproof and submersible. Transducers can be attached to the inside surface of the bilge, or externally on the transom.
Lifetime Warranty
All Hull Shield Ultrasonic products are fully covered under a Lifetime Warranty for the original purchaser. The warranty protects against defects in materials, workmanship, and parts issues.
Robert Smith –
This antifouling system works perfectly! It keeps my boat clean and maintenance-free. Installation was straightforward. I’m happy with the performance and quality of the product.
Emily Davis –
A fantastic product that simplifies boat maintenance. The Hull Shield HD1 works efficiently on my hull and stabilizers, keeping them clean and marine growth-free. Highly recommend it to other boat owners!
Michael Brown –
This product has completely changed the way I handle boat maintenance. The Hull Shield HD1 not only keeps my hull and drives clean but also works silently and effectively. The ease of installation and excellent build quality make it a must-have for anyone serious about protecting their vessel.
Jennifer Wilson –
The HD1 is a reliable and effective solution for marine fouling. It has kept my boat’s stabilizers and rudders clean. Installation was simple, and the results have exceeded my expectations.
William Anderson –
My boat has never been cleaner. This ultrasonic antifouling system works wonders on my hull and rudders. I’d highly recommend it to any boat owner.
Jessica Taylor –
I’m thrilled with the results of the Hull Shield HD1. It’s easy to install and keeps my hull and drives in great condition. Maintenance is now so much easier. Worth every penny for boat enthusiasts.
James Moore –
The HD1 system is compact yet powerful. It offers excellent protection against marine growth and works silently. My boat maintenance routine has never been this hassle-free.
Laura Thomas –
The Hull Shield HD1 delivers exactly what it promises. My hull remains spotless, and the system works without any noise or fuss. I appreciate how versatile it is, protecting different parts of the boat effectively. This product is truly worth the investment for serious boaters.
James Moore –
The HD1 system is compact yet powerful. It offers excellent protection against marine growth and works silently. My boat maintenance routine has never been this hassle-free.
Laura Thomas –
The Hull Shield HD1 delivers exactly what it promises. My hull remains spotless, and the system works without any noise or fuss. I appreciate how versatile it is, protecting different parts of the boat effectively. This product is truly worth the investment for serious boaters.
Lucas Martinez –
The Hull Shield HD1 is an excellent product. It keeps my boat clean and reduces maintenance time. The installation was straightforward, and I haven’t had any issues since setting it up. Highly recommend!
Victoria Thomas –
I’ve been using the HD1 for a couple of months now, and I’m very impressed. It keeps my hull and drives free of marine fouling. Installation was easy, and it works perfectly. Definitely a great purchase!
Benjamin Nelson –
This antifouling system is fantastic. My boat stays clean and free of fouling, and installation was quick and easy. I’m very happy with the results. Highly recommend the Hull Shield HD1.
Mia Davis –
The Hull Shield HD1 exceeded my expectations. It provides excellent protection for my boat, and installation was hassle-free. I haven’t noticed any fouling since I installed it, which is exactly what I needed. Worth the investment!
David Harris –
I’m really impressed with the Hull Shield HD1. It does exactly what it promises—keeps my hull and drives free from fouling. Installation was quick, and the performance is outstanding. I highly recommend it!
Sophia White –
This system is incredibly easy to install, and it works wonders on keeping my boat’s hull clean. The Hull Shield HD1 is an excellent choice for anyone looking to prevent marine fouling.
Ethan King –
I’ve been using the HD1 for several months, and it’s been fantastic. It has kept my boat clean and free of fouling, and the installation process was fast and simple. A great investment for any boat owner.
Lily Scott –
The Hull Shield HD1 is a great antifouling system. My boat’s hull and drives have remained clean since installation. It’s easy to install, and I’ve had no issues with it so far. I would recommend it!
James Lee –
The Hull Shield HD1 works great! My boat is protected from fouling, and the installation was a breeze. I’ve noticed a significant improvement in the cleanliness of my hull and drives. Highly recommend!
Ella Walker –
I highly recommend the Hull Shield HD1. It’s kept my boat’s hull and drives free from fouling. The installation process was simple, and I’ve seen great results. It’s a great product that’s easy to use and reliable.
Michael Adams –
The HD1 has worked wonders for my boat. It’s kept the hull, rudders, and drives free of fouling, and installation was incredibly easy. I appreciate the system’s efficiency and effectiveness. This is a must-have for anyone who owns a boat.
Chloe Mitchell –
The Hull Shield HD1 is an excellent product. I’ve noticed a huge difference in how clean my boat stays. Installation was straightforward, and I haven’t seen any fouling since I installed it. Highly recommend!
Daniel Clark –
I’m very impressed with the performance of the HD1. It’s kept my hull and drives free from fouling, and installation was a breeze. A great antifouling solution for any boat owner!
Harper Robinson –
I’ve been using the Hull Shield HD1 for a few months, and it’s kept my boat in excellent condition. My hull and stabilizers stay clean without any extra effort. It was easy to install and works great!
Matthew Evans –
The Hull Shield HD1 has worked perfectly for my boat. It’s kept the hull, drives, and rudders clean and free from fouling. Installation was incredibly simple, and the system works without any issues. I highly recommend it to other boat owners!
Jack White –
The HD1 has kept my boat free from fouling. I was able to install it quickly, and it’s worked flawlessly ever since. My hull, drives, and rudders remain clean, and I’m very satisfied!
Isabella Moore –
The Hull Shield HD1 is fantastic! It keeps my boat’s hull and drives clean from fouling, and the installation was easy. I’ve had no problems since setting it up. Highly recommended!
Oliver Harris –
This antifouling system works wonders. My hull has stayed clean since I installed the HD1, and installation was easy. I highly recommend it to anyone who owns a boat.
Avery Turner –
The Hull Shield HD1 has exceeded my expectations. It’s easy to install, and my boat stays clean from fouling. The system works seamlessly, and I haven’t had any issues. Definitely a great investment for any boat owner!
Henry Martin –
The HD1 ultrasonic antifouling system is a must-have. It keeps my boat’s hull and drives clean, and installation was quick and easy. I’m extremely pleased with the results. It’s definitely worth the investment!
Sophia Garcia –
The Hull Shield HD1 is one of the best antifouling systems I’ve used. It works as promised, keeping my hull and drives clean. The installation was fast, and it’s been working great ever since. Highly recommend this product!
David Jackson –
This product works as described. My boat has been free from fouling since I installed the Hull Shield HD1. Installation was simple, and the results have been impressive. Highly recommend for any vessel.
Megan White –
The Hull Shield HD1 has significantly reduced the amount of time I spend maintaining my boat. It works flawlessly, keeping the hull and drives clean. Installation was simple, and I’ve noticed no fouling since using it.
Daniel Harris –
This antifouling system has kept my boat in great condition. The installation process was quick, and my hull, drives, and stabilizers are free from any marine fouling. Excellent product!
Ashley Martin –
I’ve been using the Hull Shield HD1 for a few months now, and I’m impressed with how well it works. It keeps my boat’s hull, rudders, and drives clean without needing constant maintenance. Worth every cent for the protection it provides!
Joseph Thompson –
The HD1 is an efficient, hassle-free solution for keeping your boat free from fouling. My hull and stabilizers have remained clean since installation. I would definitely recommend this to fellow boat owners.
Samantha Lee –
The Hull Shield HD1 is an excellent product. It works effortlessly to protect my boat from marine growth, and the installation was quick and easy. It’s made a big difference in keeping my boat clean.
Charles Garcia –
I’m very impressed with this antifouling system. My hull stays clean, and installation was simple. The HD1 does an excellent job preventing marine fouling without any noise or issues. Highly recommend it.
Hannah Young –
I’ve used the Hull Shield HD1 for a few months, and it has completely eliminated fouling problems on my boat. The system is easy to install, works silently, and provides excellent protection for my hull.
Christopher Walker –
This system is incredibly effective. My hull and drives are kept clean with no marine growth. I appreciate the simple installation process and the fact that it works on multiple parts of the boat. Highly recommend.
Olivia Adams –
The Hull Shield HD1 is a fantastic antifouling solution. It’s easy to install and has kept my boat free of fouling. I’m impressed with how well it performs.
Matthew Scott –
The HD1 is a powerful tool for keeping your boat clean. I’ve had no issues with fouling on my hull, drives, or rudders since installation. It’s also incredibly easy to install. A great investment for boat owners!
Lauren Green –
I’m really happy with the Hull Shield HD1. It’s kept my boat’s hull clean without any extra maintenance. It was easy to install, and I’m seeing excellent results. Very satisfied!
Andrew Baker –
This ultrasonic antifouling system has worked wonders for my boat. The hull, drives, and rudders stay completely clean. The HD1 system is easy to install and has saved me from regular maintenance.
Amanda Clark –
The Hull Shield HD1 is an essential investment for any boat owner. My boat has stayed free from fouling, and installation was simple. The system does exactly what it promises—keeps the hull, drives, and rudders clean.
Ryan Carter –
I highly recommend the Hull Shield HD1. It works as advertised and keeps my hull clean from fouling. The installation was simple and efficient, and the performance has been excellent so far.
Rachel Phillips –
The Hull Shield HD1 is a game-changer. It provides reliable, long-lasting protection for my boat’s hull, rudders, and drives. Installation was quick and easy. I no longer have to worry about marine fouling. Worth every penny spent!
Joshua Martinez –
I’ve used this antifouling system for months, and I’m very pleased. My boat has remained free of marine growth, and the installation process was a breeze. It’s a reliable product that makes boat maintenance much easier.
Stephanie Turner –
The HD1 is fantastic. It works on all parts of my boat, including the hull, drives, and stabilizers. My vessel stays clean without extra maintenance. The installation was simple, and the system works flawlessly.
Nicholas Collins –
The Hull Shield HD1 exceeded my expectations. It keeps my hull and drives clean from fouling, and installation was simple. I appreciate the effectiveness and ease of use. Definitely a great purchase!