EXECUTIVE SUMMARY
Since the introduction of steel hulled vessels 120 years ago, sea water has been used to stabilise vessels. The spread of invasive species between oceans is now recognised as one of the greatest threats to the ecology of the planet. The International Marine Organisation's (IMO) convention comes into force on 8 September 2017, when all shipping lines will have until 2022 to install Ballast Water Treatment (BWT) equipment. This will involve some 55,000 vessels, of which approxinately 30,000 will require BWT using an electrochlorination process.
This will create a huge market of €750 million for high current dc power supplies which are used to power electrochlorination processes. Installing the new equipment on existing vessels will be a problem as space is limited.
Castlet has developed a low voltage high current switch mode power supply to reduce the size for the same power output to 30% of existing Transformer Rectifier 50/60Hz power supplies. The other advantage is modules of 500Amp output can be put in parallel for larger current requirements. Should one module fail in service the system will automatically operate at lower power until a replacement module is fitted.