About HEM

Leading the way in water treatment

Hydro Electrique Marine (HEM) has built a reputation as Europe’s premier manufacturer of desalinators and water treatment systems for luxury yachts.

In April 2015, HEM was acquired by Cathelco, a company with a background of serving the marine industry for more than 50 years. This brings together a comprehensive range of products and unrivalled expertise in almost every aspect of water treatment.

Based in Antibes, HEM began producing reverse osmosis desalinators in 1987. The current range of units covers all the requirements from small, cost effective systems for smaller yachts to the largest ultra-rugged duplex units capable of sustained output under continuous operation. Over the years, HEM have installed more than 4,400 desalinators providing enormous experience in this field.

Beginning in 1995, the company introduced a number of fresh water treatment systems including filtration, sterilisation and water softeners. Over the years, these products have been continuously improved and enhanced to provide excellent performance and reliability.

Cathelco and HEM – combining expertise

Cathelco offers a portfolio of products for superyachts and commercial vessels. They are world leaders in seawater pipework anti-fouling systems which prevent blockages caused by barnacles and mussels in engine cooling lines. Another area of expertise is in ICCP hull corrosion protection, where Cathelco have developed systems specifically designed to safeguard steel and aluminium hulled superyachts. More recently, they have introduced ballast water treatment systems (BWT) with capacities from 34m3/hr upwards, making them ideal for use on superyachts.