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The International Maritime Organisation (IMO), at its Marine Environment Protection Committee meeting earlier this month, rejected a proposal submitted by Turkey and ICOMIA that sought to mitigate the impact caused by the NOx Tier III regulation.

NOx is a pollutant released by combustion engines. The IMO has several NOx emissions regulations. Emission limits are commonly referred to as Tier I, II and III -- Tier III refers to the NOx emissions. Vessels above 500gt constructed on or after January 1, 2016, must already comply with the emission limits, and from 2021 vessels below 500gt but above 24 meters will also be covered.

The proposal that Turkey and ICOMIA submitted aimed to offer an alternative emission standard for vessels currently covered under a delay provision (above 24m and below 500gt). This delay provision expires in 2021 after which all recreational vessels above 24m, if operating in designated Emission Control Areas, must comply with a 2g/kWh standard.

Click here to read the full release from ICOMIA