Wedoany.com Report-Mar 31, The Tugboat Sakigake, the world’s first commercially operational ammonia-fueled vessel, completed its demonstration voyage, achieving a remarkable reduction in greenhouse gas (GHG) emissions of up to 95%. This groundbreaking accomplishment was made possible after the vessel was converted from liquefied natural gas (LNG) to ammonia fuel in August 2024.
During the three-month demonstration period, Sakigake operated in Tokyo Bay, where it performed tugboat duties alongside its converted fuel system. The vessel’s operator, NYK Line, along with IHI Power Systems (IPS) and ClassNK under Japan’s New Energy and Industrial Technology Development Organization (NEDO), demonstrated the efficiency and environmental benefits of ammonia as a fuel. Analysis conducted during the voyage revealed consistent emission reduction rates, exceeding 90% and reaching approximately 95% across various engine load ranges. These results underscored the feasibility of ammonia as a viable next-generation fuel for vessels, marking a historic first in the industry.
As part of NEDO’s Green Innovation Fund Project, NYK Line intends to continue using Sakigake for tugboat operations in Tokyo Bay while gathering operational insights and knowledge about ammonia-fueled vessels. Additionally, the company is collaborating with Japan Engine Corporation, IPS, and Nippon Shipyard to develop a domestically produced ammonia-fueled ammonia gas carrier, scheduled for delivery in November 2026. This project, also supported by NEDO, aims to advance ammonia-fueled vessel technology further. The vessel, built by Japan Marine United Corporation (JMU) Ariake Shipyard, will undergo demonstration operations to confirm its environmental and operational efficiency before providing feedback to shipbuilders and marine equipment manufacturers for future improvements.
The Sakigake’s ammonia-fueled transformation represents a significant leap in green technology, demonstrating both environmental and economic viability. This achievement not only highlights Japan’s commitment to reducing carbon emissions but also positions the country at the forefront of innovation in sustainable maritime operations.
