From power to performance: A new era of marine efficiency

Recently commissioned in New Zealand, Waitematā 2 demonstrates how Danfoss technologies enable efficient, reliable, and high-performance electric marine transportation. Built on the modular and scalable Danfoss Marine System Solutions platform, the vessel integrates power generation, DC distribution, propulsion, and energy management into a complete hybrid-electric solution.

The vessel features four propulsion lines powered by Danfoss Editron electric motors and converters, supported by a DC power system with 24 battery modules and variable-speed diesel generators. The Danfoss ECS Control System coordinates power and energy management across the vessel, ensuring efficient operation, stable battery performance, and optimized charging and discharging throughout every voyage.

Sea trials demonstrated performance beyond the original design targets. Operating in full-electric, zero-emission mode, the vessel reached a maximum speed of 36 knots, exceeding its design transit speed of 28 knots. This achievement places Waitematā 2 among the fastest hybrid and electric passenger ferries currently in operation.

Designed for future-ready operations, the vessel supports more than 3.2 MW of shore charging through dual high-power DC charging connections. The battery architecture, managed through 24 independent DC/DC converters across two separate DC distribution systems, enhances system availability by minimizing the impact of individual component failures while maintaining rapid charging capability.

Global collaboration, one success

The project also highlights the strength of collaboration across customers, partners, and Danfoss teams. Working closely with Hamilton Jet, Corvus, and Q-West, Danfoss engineers developed several first-of-their-kind solutions while incorporating valuable experience gained from the successful delivery of Waitematā 1.

This project is a strong example of One Danfoss in action. Engineering, software development, and system delivery were led by colleagues in Finland, while commissioning and optimization were carried out by teams from Singapore, Malaysia, Australia and New Zealand. Despite the geographical distance and time-zone challenges, the combined expertise and commitment of everyone involved contributed to a successful delivery and another milestone in the electrification of marine transportation.

A great example of Danfoss technologies and global collaboration driving the transition toward more sustainable marine transport.