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Marine Growth Protection System (MGPS)

Biofouling and corrosion are significant challenges faced by the shipping industry, leisure craft, and offshore installations, causing widespread damage, leading to the shutdown of critical systems, vessel drag, and decreased fuel efficiency, leading to higher emissions and significant maintenance costs. Therefore, vessels must have a dependable Marine Growth Protection System in place.

MARELCO™ Marine Growth Protection System (MGPS), is a suite of antifouling solutions that reduce maintenance and help you achieve significant cost savings, and improve marine assets’ operational and environmental performance.

See below for the MARELCO™ suite of solutions.

MARELCO™ Guardian 

MARELCO™ Guardian – (originally known as Cathelco) is the world’s FIRST and arguably the most common electrolytic marine growth and corrosion protection system used by the marine industry worldwide. The Guardian uses impressed current anodes and a control panel to create an electrolytic marine growth and corrosion protection system. Copper marine growth (MG) and aluminum trap corrosion (TC) anodes are located in the seawater system or the pipes themselves. A control panel sets the anode amperages for the desired dosage and time. Depending on the piping system’s composition, the inclusion of an iron anode may increase effectiveness. The MARELCO™ Guardian system can be used with all pipe types, including an electrolytic Marine Growth and Protection System (MGPS) also providing corrosion control for internal systems exposed to seawater intake. All Anodes are made in our manufacturing facility in Victoria, British Columbia. 

MARELCO™ Liberator (MGPS)

The MARELCO™ Liberator is a game-changer for customers facing marine fouling problems. Rather than in the sea chest itself, anodes are installed above deck in a fully accessible tank but provide the same
protection against fouling and corrosion. The tank is small enough to be located anywhere space is available. The above-deck accessibility means that NO DRYDOCK is required to change out depleted anodes; significantly extending drydock intervals. The Liberator is designed for various applications, including protection of sea chests, scrubber systems, box coolers, piping systems, and even land-based applications like desalination plants, and can provide fleet standardization when it comes to anode size.


MARELCO™ Deep  is a custom-designed cage, complete with copper and aluminum anodes. Designed for both new and existing systems and used for various applications. The innovative cage design protects submersible pumps and intake pipes from blockage due to marine fouling. The system can also be configured to prevent corrosion. The treated water will also partially treat any internal piping system beyond the intake. These are most commonly used on offshore platforms, desalination plants, geothermal heating systems using salt water, and hydroelectric plants with saltwater intakes.

MARELCO™ Liberator+

MARELCO™ Liberator+ –    A hybrid antifouling system comprising of two unique technologies: a low-frequency hydrosonic antifouling system and the MARELCO™ Liberator anode tank. The hydrosonic system produces low volume, low-frequency audio signals that are transmitted through the vessel surfaces. The low frequency makes the settling/attachment surface or environment undesirable for barnacles and mussels. Thus, this technology does not kill fouling but deters it and does not harm marine life. If you require a boost to combat biofouling in higher fouling areas, the MARELCO™ Liberator+ is your answer!


The MARELCO™ Constant Current Control Panel is the cornerstone of the MARELCO™ antifouling solutions by EMCS Industries Ltd. The control panel is used in both our MARELCO™ Guardian and MARELCO™ Liberator antifouling systems. This high-quality steel cabinet is dust and splash-proof, boasts an exterior that is corrosion and oil-stain resistant and houses a solid-state circuitry panel. The control panel is a fully automatic unit that utilizes power from the onboard service supply. Once installed, the control panel requires minimum supervision and maintenance.


MARELCO™ Piping Protection System

The MARELCO™ Pipe Protection System is part of the suite of antifouling solutions that reduce maintenance, achieve significant cost savings, and improves your marine assets’ operational and environmental performance.

The Pipe Protection System comprises impressed current anodes and a high-quality steel cabinet that is both dust and splash proof. It boasts the additional benefits of exterior corrosion and oil stain resistance.

MARELCO™ Seafarer Antifouling Monitoring Software

MARELCO™ Seafarer Antifouling Monitoring Software consists of two parts; the MARELCO™ Seafarer Software application and the new MARELCO™ Liberator Control Panel. Sold together, they provide the most comprehensive antifouling management system available today. Gone are the days of regular manual intervention on board the vessel—the MARELCO™ Seafarer Antifouling Monitoring Software self-management and the diagnostic system will ensure your antifouling system’s maximum efficiency.

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