Cruise ships capable of accommodating more than 100 passengers in Sydney Harbour are required to limit emissions of sulphur oxides when berthing (maximum 0.10% m/m). It is like a mini-ECA in Sidney waters. Learn more here.

For ships operating outside Emission Control Areas (ECAs), the limit for sulphur content of fuel oil is 0.50% m/m (mass by mass). Learn more about the global sulphur limit for shipping here.