NYK achieves 95% CO2 reduction in ammonia tug trial

At loads of 25%, these IPS engines achieved an ammonia co-firing rate of 91.0%; 93.4% at 50% loads; and 94.8% at 75% and at 100% it was 95.2%.

“The demonstration tests while in tugboat operations is the world’s first trial, confirming ammonia is one of the most viable and promising options as a next-generation fuel for vessels,” said NYK.

A commemorative ceremony was held at the Port of Yokohama to mark the successful completion of the vessel’s three-month demonstration voyage, which is seen as a milestone in the green-innovation funded project.

Going forward, Shin-Nippon Kaiyosha will continue operating Sakigake on ammonia fuel in Tokyo Bay, enabling NYK to accumulate more knowledge related to the development and operation of ammonia-fuelled vessels and its work towards achieving net-zero emissions in the shipping industry.

NYK is working with Japan Engine Corp, IPS and Nippon Shipyard Co to develop an ammonia-fuelled ammonia gas carrier, which is scheduled to be delivered in November 2026, also as part of NEDO’s green-innovation funded project.

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