Green Ship Technology

Driven by new environmental regulations and an increasing awareness of ecological issues, a significant trend towards greener systems along with better efficiency is gaining momentum throughout the maritime industry.



Reducing GHG emissions of existing fleet and newbuildings

Much of the mitigation in GHG emissions from shipping has come from reducing ship speeds to save fuel, particularly in the container sector. That appears to be coming to an end as the combination of low fuel costs, skyrocketing freight rates which have increased ten-fold in some cases over the last 18 months, and an effective cut in capacity due to heavy port congestion have all seen vessel speeds rising again. With the innovative Windship design, deep-sea shipping could see a shift towards zero-carbon operation, writes freelance journalist Nick Savvides.

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Green innovation in China’s maritime industry

China has committed to making the 2020s its decade of peak CO2 emissions, before reducing them to zero, or zero-equivalent, by 2060. This is a formidable ambition for the world’s capital of manufacturing; but the good news is that China is in position to harness a huge amount of renewable energy over the coming decades. China Classification Society (CCS), as well as other organisations, are pioneering research and innovation into the use of alternative fuels and harnessing green energy in the world’s biggest maritime nation.

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New efficiency standard for existing fleet

From January 2023, most commercial vessels will have to comply with the new Energy Efficiency Existing Ship Index (EEXI) standard. The EEXI introduces the same energy efficiency requirements for existing ships as those that were put in place for newbuildings by the EEDI in 2013. To comply with the standard, owners, classification societies and equipment suppliers must all take action now. Ship&Offshore spoke with Andy McKeran, Maritime Performance Services Director at Lloyd’s Register about the implementation of the EEXI. We also asked two propulsion experts, Christoph Rofka, senior vice president – head of Global Product Group Medium, Low-Speed and Rail at ABB Turbocharging and German Weisser, WinGD R&D Senior Advisor, Sustainability, about measures that could be taken to comply with the regulation.

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