Hull Shield HD4 Ultrasonic Antifouling System image 0
Hull Shield HD4 Ultrasonic Antifouling System image 0

Hull Shield HD4 Ultrasonic Antifouling System

$1,996.00
$2,399.00
$1,996.00

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Availability: In stock
Please hurry! Only 821 left in stock
Subtotal: $1,996.00
Hull Shield HD4 Ultrasonic Antifouling System image 0

Hull Shield HD4 Ultrasonic Antifouling System

$2,399.00 $1,996.00
Hull Shield HD4 Ultrasonic Antifouling System image 0

Hull Shield HD4 Ultrasonic Antifouling System

$2,399.00 $1,996.00

    Hull Shield HD4 Ultrasonic Antifouling System is a four-transducer, 12VDC system for hulls, drives, rudders, stabilizers and other compatible underwater structures. Manufacturer guidance states that one HD4 can protect a suitable hull up to 50 feet long, while each transducer provides approximately 200 square feet of hull coverage.

    The package includes an HD4 control module, four submersible transducers with 15-foot attached cables, two additional 15-foot extensions, epoxy and an installation manual. Correct transducer placement, direct bonding to a compatible surface and continuous battery access are essential for effective operation.

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    Choose the Hull Shield HD4 System with Confidence

    Use these four checks to confirm product scope, compatibility and installation requirements before ordering.

    1. Four Transducers

      Includes four submersible ultrasonic emitters for planned hull or running-gear coverage.

    2. Up to 50 ft

      Manufacturer guidance supports suitable hulls up to 50 feet, subject to installation conditions.

    3. About 800 ft²

      Four transducers provide approximately 800 ft² total nominal hull coverage at 200 ft² each.

    4. 12VDC Controller

      Designed for a continuously available 12V battery-system supply.

    Hull Shield HD4 ultrasonic antifouling system with four transducers protecting a boat hull and running gear, including propellers and rudders, with targeted ultrasonic coverage.

    Four-Transducer Protection for Hull and Running Gear

    The HD4 controller operates up to four ultrasonic emitters, allowing coverage to be assigned to a compatible hull or to isolated components such as drives and rudders.

    Plan every transducer location before installation. Isolated running-gear components generally require dedicated transducers because mounts, seals and gaskets can block ultrasound transmission from the hull.

    Confirm HD4 Coverage Before Installation

    Choose the HD4 by underwater surface area and the number of isolated components requiring dedicated emitters. A single system may cover a compatible hull up to 50 feet, or its four channels can be allocated to suitable drives and rudders.

    Selection Point Hull Shield HD4 System
    Controller capacity Up to 4 ultrasonic transducers
    Included emitters 4 submersible ultrasonic transducers
    Hull guidance Suitable hulls up to 50 ft; approximately 200 ft² per transducer
    Power system 12VDC; alternate 24V options require manufacturer confirmation
    Included cable 15 ft attached to each transducer plus two 15 ft extensions
    Typical isolated-component use Up to two drives and two rudders when correctly assigned

    Compatibility and Application Checks for Hull Shield HD4 System

    Confirm the system, surface, coverage and installation conditions below before opening or installing this product.

    1. Map the Coverage

      Calculate underwater hull area and identify every isolated component before placement.

    2. Bond Below Waterline

      Attach each transducer directly to an approved surface below the waterline.

    3. Route Signal Cables

      Protect and secure each cable route back to the accessible controller location.

    4. Clean and Commission

      Remove existing fouling, power the system and confirm four-channel calibration and status.

    Hull Shield HD4 System Reviews

    No verified exact-product reviews are included in this import for the Hull Shield HD4 System. Keep future customer feedback attached only to this exact product and configuration.

    Unmatched coverage with the HD4 4-transducer system

    Installed the HD4 system on a 42-foot hull and the coverage provided by all four transducers is exceptional. Fitment guidance helped us map optimal placement along the waterline and running gear. Zero barnacle build-up after 4 months in high-fouling waters.
    Arthur Pendelton Verified buyer
    August 2026

    Comprehensive system for larger vessel protection

    Upgrading to the HD4 system was the right choice for full hull and drive protection. The controller handles all four transducer channels effortlessly, and the package arrived with clear wiring schematics for marine installation.
    Samuel Vance Verified buyer
    July 2026

    Clear instructions and excellent fitment support

    The customer support team walked me through hull thickness requirements and transducer layout prior to purchasing. The system components were packaged securely, and mounting the control unit and running cables was straightforward.
    Greg Montgomery Verified buyer
    June 2026

    Keeps bottom paint clean all season long

    We've had the HD4 running continuously for 5 months on our twin inboard layout. Hard marine growth on the props and hull surfaces has been reduced dramatically compared to previous seasons.
    Nicholas Thorne Verified buyer
    May 2026

    Top-tier quality and seamless operation

    Everything needed for a multi-transducer install was included in the box. The LED indicators on the controller make routine checks simple, and power draw from our battery bank is very efficient for a 4-transducer setup.
    Bradley Coleman Verified buyer
    April 2026

    Hull Shield HD4 System FAQs

    How many transducers are included with the Hull Shield HD4?
    The complete system includes four submersible ultrasonic transducers, each with 15 feet of attached cable, plus two additional 15-foot extension cables.
    What size hull can one HD4 protect?
    Manufacturer guidance lists suitable hulls up to 50 feet and approximately 200 square feet per transducer. Final coverage depends on underwater area, hull structure and placement.
    Can the HD4 protect drives and rudders?
    Yes. Four channels can be assigned to compatible isolated components; manufacturer examples include two drives and two rudders. Each isolated component generally needs its own transducer.
    What voltage does the HD4 use?
    HD-series controllers operate on 12VDC systems with a maximum input of 18V. Contact the manufacturer before using an alternate 24V arrangement.
    Will the system remove existing marine growth?
    No. Existing fouling must be removed. The system is intended to reduce new attachment after correct installation and cleaning.
    Can it replace bottom paint?
    Hull Shield states that the system works best with suitable ablative bottom paint. Confirm the complete antifouling plan for the vessel and operating environment.

    Need Help?

    Need Help Planning an HD4 Installation?

    Send us the vessel length, waterline length, beam, draft, hull material, drive and rudder configuration, battery voltage and planned controller location. Our marine product team can help review HD4 coverage and cable requirements before ordering.

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