The project deepened the Inner Harbour and Entrance Channel to 14.7 metres and the Deepwater Channel to 16.5 metres. It took the maximum draft capability from 12.8 metres to 14 metres, enabling bigger ships to enter fully loaded with the aid of draft-enhancing technology known as Dynamic Under Keel Clearance.
Dredged material from the deepening was reused to create additional land at Rous Head for port-related purposes. This material was pumped behind a new seawall which was lined with geotextile material.
The project also involved strengthening of the North Quay container berths to cater for the heavier loads the bigger ships impose on wharf infrastructure.
The deepening and associated works have expanded the port’s trade capability and are ensuring that Western Australian business continues to have access to major direct shipping services.
A study by transport economic specialists Meyrick and Associates showed that failure to deepen in line with other Australian capital city ports would have led to a loss of major direct shipping services, with larger ships bypassing Fremantle and travelling to the eastern seaboard.
Enabling the larger, more modern cargo ships to service the port also has benefits in terms of improved efficiency in fuel consumption and reduced greenhouse gas emissions.
Completion of the deepening project means Fremantle will remain an efficient, modern working port able to handle current and future vessel requirements and trade needs.
The total project cost was $250 million, which included the dredging, seawall construction and berth strengthening at North Quay.