Coldharbour Marine Limited, based in Alfreton in the United Kingdom can trace its origins back more than 35 years. Our products and designs have been used extensively in both the marine and offshore sectors over many years. Now, for the first time we are bringing all our products together under one brand name:The new Coldharbour range of 3rd generation Inert Gas Generators.Domestic Water Module Fully integrated Domestic Water Modules for the distribution of hot and cold water on ships. Ballast Water Treatment Effective Ballast Water Treatment systems that address current and future environmental requirements. Quench Scrubber The new Coldharbour range of patented, ultra compact quench scrubber systems.