

Cathelco Ltd
About us
Cathelco® is a recognised leader in Marine Growth Prevention Systems (MGPS) and Impressed Current Cathodic Protection Systems (ICCP), Ultrasonic Anti-fouling (USP), Reverse Osmosis (RO) and Water Treatment Systems.
These technologies help protect hulls, seawater pipework, and onboard systems from biofouling and corrosion. All contributing to extended equipment lifespan, reduced maintenance frequency, and the smooth operation of critical systems.
Whilst our reverse osmosis and water treatment systems provide potable water and water treatment systems for all your vessel’s needs.
We are the industry experts with over 70 years in the market.
Products

Reverse Osmosis (R.O.)
HEM flow is ideal for yacht projects where space and budget is limited, and reliability is critical. The Flow series covers typical freshwater demands for 20–50m yachts. Helping designers, builders and operators choose a freshwater system that fits the vessel, supports smooth operations and makes long-term ownership straightforward.

Marine Growth Prevention Systems (MGPS)
Marine growth prevention eliminates the settlement of macro biofouling organisms on the ship’s interior piping systems, thus creating less waste due to the longer lifecycle of the pipes. Cathelco® marine growth prevention systems (MGPSs) for seawater pipework are easy and economical to install, and they can be found on more than 50,000 ships worldwide. Designed to eliminate blockages caused by barnacle and mussel growth in seawater cooling lines, the systems are available for vessels of every size including mini systems for luxury yachts.

Impressed Current Cathodic Protection (ICCP)
Cathelco® ICCP systems are designed for various materials steel or aluminium hulls protecting all vessels from yachts, naval vessels, fishing vessels and workboats. Using an arrangement of hull-mounted anodes and reference cells connected to one or more control panels, the system produces a more powerful external current to suppress the natural electro-chemical activity on the wet surface of the hull. This eliminates the formation of aggressive corrosion cells on the plate surfaces, avoiding problems that can exist where dissimilar metals are either combined through welding or brought into proximity by other components such as propellers.

Ultrasonic Antifouling
Keep your superyacht pristine and protected with the industry’s most advanced ultrasonic antifouling technology for the hull