Hull Shield
Hull Shield, a brand of EcoSonic, LLC, manufactures ultrasonic antifouling systems that prevent marine biofouling on boat hulls using 20-42kHz high-frequency sound waves. It sells direct via hullshield.net, through a global dealer network, and as a factory-installed option on Aquila catamarans, serving recreational boaters, yacht owners, and commercial marine operators.
- Company typePrivate
- Founded2018
- HeadquartersAnnapolis, United States
- Headcount1–10
- GTM typeB2C
- OfferingHardware or Manufacturing
What Hull Shield does
Hull Shield is a marine-technology hardware brand operated by EcoSonic, LLC, a privately held US company headquartered in Annapolis, Maryland (222 Severn Avenue, Suite 26, Building 4E). The company designs and sells ultrasonic antifouling systems that prevent marine biofouling on boat hulls, drives, rudders, thrusters, sea chests, coolers, and pipework by transmitting high-frequency sound (20kHz-42kHz) through hull surfaces to create a high-pressure barrier that disrupts organism attachment and reproduction. Its current product portfolio spans three hardware platforms: (1) the legacy HD Series (HD1/HD2/HD4), being phased out in 2025, (2) the next-generation HDi Intelligent Series (HDi1-HDi8) shipping from 2026 with INTELISENSE remote monitoring, INTELIBOOST synchronized pulse power up to 120W, INTELITUNE material-specific frequency tuning, and wireless/app control, and (3) higher-output variants HDY (yachts and large vessels) and HDX (commercial and industrial applications). At least five patent-pending inventions back the HDi platform and its sub-features.
Hull Shield generates revenue through one-time hardware sales, with system prices ranging from $399 (HD1) to $4,399 (HDi8) and replacement transducers/accessories at $249, $29.99, and other unit-priced SKUs. Distribution is product-led: direct-to-consumer e-commerce at hullshield.net, a global dealer/installer network surfaced via an online locator, OEM factory installation via the Sino Eagle USA / Aquila catamaran partnership (announced July 2023), and on-site sales at five major boat shows (MIBS, PBIBS, IBEX, FLIBS, Work Boat Show). The company reports 1-10 employees and, per its own marketing, claims the largest global share of the antifouling product category since its 2018 introduction.
The customer base is broadly horizontal across recreational boaters (primary segment), yacht and luxury-vessel owners, and commercial marine operators, with named endorsements including Aquila 44 catamaran owners, a Premier Grand Entertainer pontoon, a 50-foot Absolute in Charleston, and NCS Boatworks. There is no disclosed revenue, no external funding rounds, and no public listing; ownership appears management-controlled with no identified institutional investors.
Hull Shield firmographics
Firmographics- Name
- Hull Shield
- Legal name
- EcoSonic, LLC
- Website
- https://hullshield.net
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Hull Shield, a brand of EcoSonic, LLC, manufactures ultrasonic antifouling systems that prevent marine biofouling on boat hulls using 20-42kHz high-frequency sound waves. It sells direct via hullshield.net, through a global dealer network, and as a factory-installed option on Aquila catamarans, serving recreational boaters, yacht owners, and commercial marine operators.
- Ownership category
- akta.pro rank
Hull Shield industry classification
Industry- Product category
- Marine Antifouling Systems
- NAICS
- Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)
- SIC
- Ship & Boat Building & Repairing (3730)
- akta.pro primary industry
- Underwater Hull Inspection, Cleaning & Propeller Services (TLAKAKAJ)
Keywords
Where Hull Shield is headquartered
LocationHeadquarters
- HQ city
- Annapolis
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Hull Shield business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Marketing or Sales, Personnel, Operations
Revenue model
- Hardware Systems Sales: One-time sale of ultrasonic antifouling systems (controllers + transducers) across HD Legacy and HDi Intelligent product lines. Systems priced from $399 (HD1) to $4,399 (HDi8) depending on transducer capacity and intelligent features.
- Replacement Parts & Accessories: Ongoing sales of replacement transducers ($249), signal cable extensions ($29.99), controller units, and accessories (Victron converters, battery protectors, epoxy). Supports existing customer base and installation needs.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | HD1 Single Transducer System |
| One time/ perpetual license | Pay-as-you-go | HD2 Dual Transducer System |
| One time/ perpetual license | Pay-as-you-go | HD4 Four Transducer System |
| One time/ perpetual license | Pay-as-you-go | HDi1 Single Transducer Intelligent System |
| One time/ perpetual license | Pay-as-you-go | HDi2 Dual Transducer Intelligent System |
| One time/ perpetual license | Pay-as-you-go | HDi3 Triple Transducer Intelligent System |
| One time/ perpetual license | Pay-as-you-go | HDi4 Quad Transducer Intelligent System |
| One time/ perpetual license | Pay-as-you-go | HDi6 Six Transducer Intelligent System |
| One time/ perpetual license | Pay-as-you-go | HDi8 Eight Transducer Intelligent System |
| Unit Pricing | Pay-as-you-go | Parts & Accessories |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Hull Shield product offering
Product offeringCore offering
Hull Shield designs, manufactures, and sells ultrasonic antifouling systems that use high-frequency sound waves (20kHz–42kHz) to prevent marine biofouling on boat hulls, drives, rudders, sea chests, coolers, and pipework. Its product lines include the HD Legacy Series for recreational vessels, the HDY Series for yachts, and the HDX Series for commercial/industrial marine applications, with the next-generation HDi Intelligent Series launching in 2026 adding wireless connectivity and remote monitoring. Supporting accessories such as replacement transducers, signal cable extensions, DC converters, and battery protection devices are sold to support installed systems.
Product overview
Hull Shield offers ultrasonic antifouling systems that use high-frequency sound waves to prevent marine fouling on boat hulls and running gear. The product portfolio consists of two main platform generations: (1) the legacy HD Series (HD1, HD2, HD4) for recreational and light-watercraft, and (2) the next-generation HDi Intelligent Series (HDi1-HDi8) featuring wireless connectivity, mobile app control, remote monitoring, and enhanced power delivery. Specialized product lines include the HDY Series for yachts and larger vessels, and the HDX Series for commercial and industrial applications. Each system includes a controller unit and submersible transducers that emit ultrasonic pulses to create a high-pressure barrier preventing marine organism attachment. Supporting accessories include replacement transducers, signal cable extensions, Victron power converters for 24V systems, and battery protection devices. All products are manufactured in the USA (Maryland and Ohio) with headquarters in Annapolis, Maryland.
Differentiator
Problem solved
Functional benefit
Products and services
- Hull Shield HDi Intelligent Series Next-generation intelligent ultrasonic antifouling platform supporting 1–8 transducers with 60W power per transducer, wireless/Bluetooth connectivity, mobile app control, INTELISENSE remote monitoring with SMS/email alerts, INTELIBOOST up to 120W pulse power, and INTELITUNE frequency tuning for hulls, drives, rudders, and thrusters of recreational boats, sailboats, and yachts.
- Hull Shield HDY Series High-power ultrasonic antifouling system engineered specifically for yachts and larger vessels, providing premium protection with enhanced power output, extended range, and broader hull coverage than recreational models, including protection for hulls, shafts, props, pods, stern drives, jet-drives, steering and control gear, sea chests, and box coolers.
- Hull Shield HDX Series Industrial-grade ultrasonic antifouling system for commercial and industrial marine applications, protecting hulls, props, shafts, jet-drives, pods, sea chests, box coolers, pipework, keel coolers, heat exchangers, RSW cooling systems, and bulk storage tanks while reducing fuel consumption, emissions, and service intervals.
- Hull Shield HD1 Ultrasonic Antifouling System Single transducer ultrasonic antifouling system providing 24/7 biofouling protection for hulls, drives, rudders, and stabilizers on recreational and light-watercraft; legacy platform priced at $399 per system.
- Hull Shield HD2 Ultrasonic Antifouling System Two transducer ultrasonic antifouling system with dedicated controller providing extended protection for hulls and running gear on recreational and light-watercraft; legacy platform priced at $798 per system.
- Hull Shield HD4 Ultrasonic Antifouling System Four transducer ultrasonic antifouling system providing protection for hulls up to 48–50ft in length, or two drives and two rudders simultaneously on recreational and light-watercraft; legacy platform priced at $1,596 per system.
- Hull Shield HD Transducer with 15ft Integrated Signal Cable Replacement submersible ultrasonic transducer with 15ft integrated signal cable for Hull Shield antifouling systems, IP68 rated and 100% galvanically isolated; priced at $249.
- Signal Cable Extension for Ultrasonic Transducer - 15ft 15-foot signal cable extension for connecting transducers to the Hull Shield control module or extending existing cables; fits all HD, HS, and DS ultrasonic transducers and is priced at $29.99.
- Victron Orion 24-12 DC/DC Converter 25A 24V to 12V non-isolated DC-DC converter providing 25A continuous current for marine vessels with 24V battery systems requiring 12V power for Hull Shield systems; priced at $84.
- Victron Battery Protect 12/24V 65A Battery protection device with auto-ranging 12/24V support that disconnects the battery from non-essential loads before complete discharge; Li-ion compatible with programmable voltage thresholds, priced at $47.
- J-B Weld 8272 MarineWeld Marine 2-Part Epoxy Two-part marine-grade epoxy adhesive for bonding surfaces during transducer installation, with 5020 PSI tensile strength, setting in 4–6 hours and fully curing in 15–24 hours; priced at $7.99.
Quantifiable outcome
- Extends bottom paint lifespan by reducing abrasive cleaning frequency
- +4 more outcomes
Companies that use Hull Shield
Customer profileNamed customers4 records
Segments3 records
Ideal customer profiles3 records
Hull Shield technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Hull Shield partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Sino Eagle USAcoreSino Eagle USA, the exclusive manufacturer of Aquila luxury catamarans, offers Hull Shield antifouling systems as a factory-installed option on Aquila models 32 Sport, 36 Sport, 42 Yacht, 44 Yacht, 54 Yacht, 70 Luxury, and new 47 Molokai. This collaboration enables new Aquila customers to order Hull Shield directly from the factory. Sino Eagle USA was established in 2011 and is based in Clearwater, Florida. Aquila is the top-selling power catamaran brand globally.
Scale indicators6 records
Recent moves5 records
Expansion highlights5 records
Hull Shield competitors and assessment
Company assessmentBroad incumbents
- International Paint (AkzoNobel Marine): World's largest marine coatings manufacturer offering the full range of antifouling bottom paints and foul-release products under the Intercept and Intersleek brands. Competes with Hull Shield in the same antifouling problem space via traditional biocide paints rather than ultrasonic technology.
- Hempel A/S: Global marine and protective coatings supplier with a significant antifouling paint portfolio (Globic, Silic One). Major incumbent whose biocide-based antifouling paints are the legacy alternative Hull Shield is positioning against.
- Jotun Marine Coatings: Leading global marine coatings company with antifouling, fouling control, and hull performance solutions. Direct incumbent competitor in the antifouling category with broad OEM and shipyard relationships.
Emerging players
- MGPS Ltd / Marine Growth Prevention Systems: Manufacturer of marine growth prevention systems for offshore structures, pipelines, and vessels using copper and aluminum anodes. Competes in adjacent segment for non-biocidal / non-toxic antifouling of equipment but mostly targets industrial/offshore markets.
- Spot Zero (Spotless Water Systems): Maker of onboard desalination and water treatment systems for yachts, including electrochemical biofouling prevention for sea strainers and air conditioning. Adjacent product overlap with Hull Shield's ultrasonic antifouling in the yacht and large-vessel segment.
- Propspeed: Propspeed applies foul-release coatings to underwater metals (props, rudders, sterndrives). Offers an alternative non-toxic antifouling approach that competes with Hull Shield's ultrasonic systems for the same running-gear and propulsion protection use case.
- Symec / Sonihull: Sonihull produces ultrasonic antifouling systems specifically for HVAC, seawater pipework, box coolers, and heat exchangers on commercial and naval vessels. Direct comparable within the HDX application space of Hull Shield (pipework, keel coolers, heat exchangers).
Direct peers
- ElectroSea: ElectroSea produces electrochlorination-based biofouling prevention systems for boat and yacht sea strainers. Directly comparable as an alternative-technology (electrochemical vs ultrasonic) marine antifouling device maker targeting the same recreational and small-vessel customer base.
- Cathelco: Cathelco manufactures marine growth prevention systems (MGPS) using electrolytic/cathodic antifouling technology for ships and offshore structures. Directly comparable to Hull Shield as another non-paint, technology-based antifouling system provider for marine vessels.
- Ultrasonic Antifouling Ltd (UA Systems): UK-based manufacturer of ultrasonic antifouling systems for commercial and leisure vessels. Most direct head-to-head competitor to Hull Shield, using similar high-frequency transducer technology for hull and running gear protection.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Hull Shield social profiles
Digital presenceHull Shield financial estimates
Financial estimateRevenue estimate
Valuation estimate
Hull Shield leadership team
Management profileNumber of profiles
Profiles3 records
Hull Shield funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Hull Shield M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Hull Shield
What does Hull Shield do?
Hull Shield designs, manufactures, and sells ultrasonic antifouling systems that use high-frequency sound waves (20kHz–42kHz) to prevent marine biofouling on boat hulls, drives, rudders, sea chests, coolers, and pipework. Its product lines include the HD Legacy Series for recreational vessels, the HDY Series for yachts, and the HDX Series for commercial/industrial marine applications, with the next-generation HDi Intelligent Series launching in 2026 adding wireless connectivity and remote monitoring. Supporting accessories such as replacement transducers, signal cable extensions, DC converters, and battery protection devices are sold to support installed systems.
Is Hull Shield a public or private company?
Hull Shield is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Hull Shield founded?
Hull Shield was founded in 2018. It employs 1 to 10 people.
Where is Hull Shield based?
Hull Shield is headquartered in Annapolis, United States, in the North America region.
How does Hull Shield make money?
Two revenue lines are on record. Hardware Systems Sales are the primary driver. The others are replacement Parts & Accessories.
Who are Hull Shield's main competitors?
Broad incumbents on record are International Paint (AkzoNobel Marine), Hempel A/S and Jotun Marine Coatings. Emerging players are MGPS Ltd / Marine Growth Prevention Systems, Spot Zero (Spotless Water Systems), Propspeed and Symec / Sonihull. Direct peers are ElectroSea, Cathelco and Ultrasonic Antifouling Ltd (UA Systems).
Does Hull Shield have an API?
No public API is recorded for Hull Shield.
What industry is Hull Shield in?
Hull Shield's product category is Marine Antifouling Systems. Its primary akta.pro industry code is TLAKAKAJ, Underwater Hull Inspection, Cleaning & Propeller Services. Its NAICS code is 334511 and its SIC code is 3730.