As a part of global measures to reduce harmful nitrogen oxide emissions, marine diesel engines with a power output of greater than 130kW must comply with NOx emission limits, Australian Maritime Safety Authority announced.
n fact, AMSA recently introduced new measures in an effort to assist domestic commercial vessel (DCV) owners and operators comply.
We have introduced measures that will assist DCV owners and operators comply with these requirements.
Under the new Exemption 44, DCV owners and operators can hold specific alternative evidence to demonstrate their engines are likely to meet the NOx emission limits.
This will be available until amendments to Marine Order 97 are in place, from 15 December 2021. These amendments will put the onus on engine suppliers to provide the EIAPP certificate and technical file. Industry will soon be invited to provide input on the amendments to Marine Order 97.
In Australia the NOx emission limit that applies is known as Tier II – it applies to marine diesel engines installed on vessels constructed or undergoing a major conversion after 1 January 2011. The less polluting Tier III engines are welcomed in Australia but are only mandated in North America and Northern Europe.