AMSA Marine Notice

The use of an EGCS is permitted in Australian waters as an option to comply with the low sulphur fuel requirements of MARPOL Annex VI, as set out in the Protection of the Sea (Prevention of Pollution from Ships) Act 1983, section 26FEGA, provided it is approved by the vessel’s flag State Administration, or a recognised organisation appointed by the flag State. The EGCS must also be operated in accordance with International Maritime Organization (IMO) requirements, including the 2021 Guidelines for Exhaust Gas Cleaning Systems (resolution MEPC.340(77)).

https://www.amsa.gov.au/122022-requirements-use-exhaust-gas-cleaning-systems-australian-waters