The declared area, stretches over 1,800 km2 between Swansea and Port Stephens.
The revised zone will be 20 km from the coast in the north and over 35 km from the coast in the south.
These changes enable continued safe management of shipping and other sea industries. Offshore infrastructure will also be limited to a height of 260 metres to address aviation safety.
Below are some examples of how this will look from the shore.