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Marine Growth and Corrosion Protection for Hulls and Subsea Structures Using MGPS and ICCP/Sacrificial Anode Systems

Marine Growth and Corrosion Protection for Hulls and Subsea Structures Using MGPS and ICCP/Sacrificial Anode Systems

Marine environments present a dual threat to vessels and offshore structures: corrosion caused by saltwater and biofouling from marine organisms. Corrpro Europe addresses both challenges using a combined protection strategy that integrates impressed current cathodic protection (ICCP), sacrificial anodes, and marine growth prevention systems (MGPS). This approach is engineered to safeguard hulls, ballast tanks, subsea components and internal seawater pipework.

This article explores how each system works and how Corrpro’s integrated solution protects assets operating in harsh marine conditions.

Addressing Corrosion and Biofouling in Marine Environments

Saltwater accelerates electrochemical corrosion of steel, which can compromise the integrity of hulls, propellers, rudders and subsea structures. Simultaneously, biofouling from marine organisms reduces flow efficiency, obstructs seawater systems, and increases maintenance requirements.

Corrpro Europe’s Marine Division combines technologies to mitigate both corrosion and marine growth, ensuring long-term asset protection and performance.

ICCP Systems and Sacrificial Anodes for Corrosion Control

Aquamatic® ICCP for Automated Protection

Corrpro’s Aquamatic® ICCP systems deliver efficient, automatic cathodic protection by applying regulated impressed current through mixed-metal-oxide (MMO) inert anodes, driven by precision-controlled transformer–rectifier (T/R) units. Protection levels are monitored in real time using zinc or silver/silver-chloride reference electrodes.

Designed to suit the vessel’s size and geometry, Aquamatic® systems can be configured with forward, midship, and aft protection zones. Once installed, the system operates autonomously, with optional remote monitoring to track performance throughout the vessel’s service life.

Galvanic Anodes for Sacrificial Protection

Corrpro Europe also supplies a full range of sacrificial anodes, aluminium, zinc, and magnesium, specified for applications where galvanic protection is the appropriate design choice, or where it complements an ICCP system. These anodes are widely used on smaller vessels, ballast tanks, subsea equipment, seawater systems, and pipework, providing reliable, passive corrosion control.

Our in-house UK manufacturing ensures strict alloy specification, high-quality casting, and reliable delivery for both newbuild and retrofit projects.

Biofouling Mitigation with Anfomatic® MGPS

Marine Growth Prevention Systems (MGPS) protect seawater systems from biofouling by maintaining controlled copper ion concentrations. Corrpro’s Anfomatic® MGPS is designed to treat sea chest compartments, box coolers, strainers, and fire-water systems, preventing the settlement and growth of fouling organisms and ensuring reliable system performance.

This system is easy to operate, requires minimal maintenance, and has been installed on over 1,000 vessels and offshore platforms globally. Anfomatic® systems can be retrofitted to existing installations and is supported by our global service network.

Benefits of the Combined ICCP and MGPS Approach

Corrpro Europe’s integrated protection strategy offers:

  • Proven corrosion prevention using ICCP and sacrificial anodes
  • Copper-based MGPS for effective biofouling control in internal seawater systems
  • Extended service intervals and reduced maintenance costs
  • Full lifecycle support from design to servicing

By integrating corrosion protection and marine growth prevention, asset operators achieve optimised structural integrity, reduced maintenance interventions, and sustained operational efficiency, while ensuring adherence to classification society requirements and performance standards.

Shaft Grounding and Monitoring

To protect rotating components such as propeller shafts and rudders, Corrpro Europe uses shaft grounding assemblies with silver brushes to bond them to the hull, integrating these components into the ICCP system for full polarisation and effective cathodic protection.
In addition, optional remote monitoring provides secure access to system data, offering real-time visibility of protection parameters and supporting timely maintenance actions.

Global Supply and Marine Expertise

Corrpro Europe brings over 50 years of experience in cathodic protection and marine antifouling. With dedicated in-house manufacturing capabilities and a full-service engineering team, we deliver:

  • Custom ICCP and MGPS system design
  • Local and global technical support
  • Spare parts for Corrpro, Wilson Walton and third-party systems
  • Responsive servicing during dry-dock or scheduled maintenance

Visit our Marine Cathodic Protection page for further technical details and to view our full product offering.

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