Browse and download all the latest IMarEST-produced guides, publications and reports from across the breadth of marine engineering, science and technology.
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From 1 January 2020, the IMO introduced new regulations in a bid to reduce sulphur emissions from the marine sector by over 80%. These regulations (known as IMO2020) mandate that the prior maximum fuel oil sulphur limit of 3.50% m/m (mass by mass) will fall to 0.50% m/m. This is the largest reduction in the sulphur content of a transportation fuel undertaken at one time. In order for the shipping industry to comply, ships must consider one of three currently available options:
1. use of low-sulphur fuel oilThis IMarEST Explainer aims to set out the concerns that are frequently raised in connection with option 2 – the installation of scrubbers. It will focus on the potential impact of washwater discharges from open-loop scrubbers on the marine environment and consider to what extent they are grounded in science. It will highlight current gaps in our knowledge, explain some of the practical difficulties impeding research and finally, offer some policy recommendations.
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