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MARELCO™ Antifouling + Anticorrosion

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 turnkey antifouling solutions that reduce maintenance, achieve significant cost savings, and improve marine assets’ operational and environmental performance.

See below for the MARELCO™ suite of solutions.

MARELCO™ Guardian 

MARELCO™ Guardian – (known initially 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. 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 provides corrosion control for internal systems exposed to seawater intake. All Anodes are made in our manufacturing facility in Victoria, British Columbia. 

MARELCO™ Liberator 

The MARELCO™ Liberator is a game-changer for customers facing marine fouling problems. Rather than in the sea chest itself, anodes are installed above the 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 dry dock intervals. The Liberator is designed for various applications, including the protection of sea chests, scrubber systems, box coolers, piping systems, and even land-based applications like desalination plants. It can provide fleet standardization when it comes to anode size.

MARELCO™ Commander

MARELCO™ Commander is the mini version of the Liberator system but still packs that additional antifouling and anticorrosion punch of the sea chest and internal piping systems! The tank is small enough to be located anywhere space is available. The above-deck accessibility means that there is NO DRYDOCK 


The MARELCO™ WAVE is EMCS Industries’ sustainable offering for marine growth protection.  This hybrid antifouling system combines two products: our low-frequency acoustic antifouling system and our above-deck MARELCO™ Liberator anode tank.  Most importantly, MARELCO™ WAVE hybrid antifouling system will help your vessel meet environmental standards and legislation around antifouling systems!

MARELCO™ Exchanger

EMCS Industries is excited to introduce our innovative new design, the MARELCO™ Exchanger!  Using anodes on the inboard side of the vessel located in our above-deck tank- the Liberator. The Liberator tank pulls seawater from the sea chest into the tank. The anodes in the tank treat the sea chest water in the internal piping system with copper and aluminum ions, acting like anodes in the sea chest, and deliver the treated water back through a custom-designed cage of perforated CPVC pipe to provide a focused dose of copper ions right into the crevices of the box cooler where it is required


MARELCO™ Deep is a custom-designed cage 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.  These are most commonly used on offshore platforms, desalination plants, geothermal heating systems using salt water, and hydroelectric plants with saltwater intakes.

Control Panel marine, growth, protection, system, MGPS

MARELCO™ Control Panel

The MARELCO™ Constant Current Control Panel is the cornerstone of the MARELCO™ antifouling solutions by EMCS Industries Ltd. The control panel is used in 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.

Piping Protection

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 improve your marine assets’ operational and environmental performance.

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

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