Zinc Bolt-on Hull Anodes


About product

Zinc bolt-on hull anodes are specialized marine anodes designed for corrosion protection of a ship or boat’s hull. These marine anodes are typically made of high-quality zinc and feature a bolt-on configuration for easy installation onto the hull surface.

Zinc Bolt-on Hull Anodes Drawing

zinc bolt on hull anodes

Additional information


Zinc alloy


ASTM, CSS, etc


ships, water ballast tanks, marine engineering and port facilities, wharf, mechanical equipment, drilling platform

Product Detail

Marine Zinc Anodes – Zinc Anode For Ship Hull

Marine zinc hull anodes are specifically designed to provide effective corrosion protection for ship hulls. These marine zinc anodes serve as sacrificial components that are strategically attached to the hull surface.

The purpose of the hull anodes is to sacrifice themselves through corrosion instead of the ship’s hull. This sacrificial action helps prevent the hull from corroding in the harsh marine environment. As the marine zinc anodes corrode, they release electrons into the surrounding water, creating a cathodic protection mechanism.

The Features Of Zinc Bolt-on Hull Anodes

  • Small Autolysis: The bolt-on type marine anodes exhibit minimal self-consumption (autolysis) during the corrosion process. This means that the anodes maintain their shape and integrity for an extended period, ensuring consistent and effective corrosion protection.
  • High Current Efficiency: Marine zinc anodes have a high current efficiency, meaning they effectively release electrons into the surrounding seawater during the corrosion process. This efficient current transfer enhances their protective capabilities.
  • Excellent Self-Regulating Property: The hull anodes possess a self-regulating property, meaning they adjust their corrosion rate according to the environmental conditions and the level of protection required. This ensures optimal and balanced corrosion protection without the risk of over protection.
  • Long Protection Period: These marine anodes offer a long protection period, typically lasting for 20 to 30 years or even longer, depending on the specific conditions. This extended lifespan reduces the frequency of anode replacement and maintenance, providing cost savings and convenience.
  • No “Over Protection” Phenomenon: Marine zinc anodes are designed to prevent the occurrence of “over protection.” Over protection can happen when anodes release excessive amounts of electrons, leading to damage or accelerated corrosion of the protected structure. The self-regulating property of these anodes helps maintain a balanced and controlled corrosion rate, avoiding such issues.

Parameter Of Bolt-on Type Marine Zinc Anodes

zinc bolt on hull anodes

Know Who We Are

About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.


Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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