How to reduce your yacht's environmental footprint

Written by Rebecca Smurthwaite

‘Green’, ‘sustainability’, ‘eco-friendly’, ‘hybrid-propulsion’, these are just a few of the buzzwords currently circulating the yachting industry. Propelled into overdrive by the pandemic, regulations are tightening and industry specialists are searching for new ways to reduce their yacht's environmental footprint before it's too late.Sunseeker 116 Lost Boys aerial view in the BahamasPhoto: Quin BissetEmission control specialists, Emigreen, can supply a solution to reduce these troubling Nitrogen Oxides (NOx) emitted by your yacht’s engine – introducing their Selective Catalytic Reduction (SCR) system.Emigreen SCR systemsHow to reduce your yacht's environmental footprint?

Industry leaders and yacht owners alike are looking for new solutions to make their yachts more environmentally-friendly, whether that be by introducing innovative hybrid-propulsion systems, or other methods. However, emission control specialists, Emigreen, have a solution adaptable to all yachts to help you start reducing emissions today. 

An SCR is an exhaust aftertreatment process that minimises the harmful NOx emissions produced by diesel engines. By injecting a urea water solution into the exhaust stream, the urea is converted into ammonia, which bonds to the NOx, before the catalytic converter reduces the toxic components into harmless nitrogen and water vapour, which is then safely released into the atmosphere. These systems are easily installed and maintained and most importantly, future-proof your yacht for emissions standard compliance to allow your yacht to meet IMO Tier III emission levels. Emigreen SCR systemsWhat are the latest IMO Tier III regulations?

In January 2016 maritime law ruled that engines above 130 kilowatts on vessels over 500 GT and 24 metres in length had to control their NOx emission levels. At the time, these regulations only applied in Emission Control Areas (ECAs), which included North America and the Caribbean. However, as of January 2021, these regulations and ECA’s were extended to the Baltic Sea and North Sea, as well as any sub-500 GT vessels which are 24 metres or longer in length. Ultimately, this now means many new superyachts being built need to control their emission levels to be Tier III compliant.Emigreen SCR systemsWhat does this mean and how can Emigreen assist? 

Many sub-500 GT superyachts 24-metres or longer recently built or still under construction, now have to undertake the task of reducing their NOx levels to comply with IMO Tier III. An SCR system is essential to ensure compliance with these regulations. Unfortunately, SCR systems can often be bulky and take up lots of space in the engine room, however Emigreen has found a way to create a compact and small SCR system compatible with almost all modern marine diesel engines aboard your superyacht.

Emigreen systems are cleverly tailored to make the best use of available space. Every aftertreatment system can be custom engineered to engine-specific settings, specifications and performance, however if a standard system fits, then a standard system will be used. Depending on the engine load and temperature of the exhaust gasses, the SCR unit is programmed to inject the exact amount of urea needed to reduce NOx emissions below the required level. Emigreen SCR systemsFurthermore, their silencer is integrated into the unit, cancelling the need for a bulky, space consuming silencer. The Emigreen SCR system is easy to install, simple for crew to maintain, and an absolute must for your superyacht. They are smaller than many alternatives, making them more suitable for your superyacht. The SCR can also be installed as a retrofit, even in spaces that look too small.

So if you are ready to take the first step in making your superyacht IMO Tier III compliant, and more importantly, environmentally-friendly, then get in touch with Emigreen to discuss your very own Selective Catalytic Reduction system.Emigreen SCR systems



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