The global shipping industry is under increasing pressure to decarbonise and reduce its environmental impact. While much work has already been done to optimise blue ocean voyages, the potential in optimising the final transit through the shipping channel has often been overlooked, resulting in unnecessary fuel consumption and emissions in the coastal waters close to the port.

To tackle these challenges, DHI partnered with the Port of Brisbane to deliver the Green Button – a digital innovation that leverages the physics-based capability of NCOS Online to calculate the most suitable vessel speed profile to utilise local weather and currents to reduce fuel consumption and speed as much as possible while meeting the scheduled arrival and departure time in port. The solution was tested together with project partners A.P. Moller – Maersk, CMA CGM, Poseidon Sea Pilots and Marine Safety Queensland.

The system is built around DHI’s operational digital twin NCOS Online platform, which is a physics-based decision support system that is currently operationally supporting the safe and optimised traffic management of large and deep-drafted vessels into port across five continents.

The trial implementation of the Green Button at the Port of Brisbane has yielded measurable potential environmental and operational benefits. When fully implemented, it is expected to enable vessels to reduce speed and avoid queuing, potentially reducing emissions equivalent to the annual carbon footprint of approximately 1,000 Australians.

Shipping operators benefit from lower fuel costs and improved predictability in port operations. And the port itself reduces congestion and enhances throughput efficiency, contributing to its broader sustainability goals.

The Green Button is a scalable solution, demonstrating how digital tools can accelerate the decarbonisation of existing fleets by improving energy efficiency in real-world port operations. The solution was awarded the Innovation Excellence award at the Australian National Infrastructure Awards in 2025.