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Hanwha Power Systems Receives Approval in Principle from ABS

Hanwha Power Systems has achieved a significant milestone by obtaining Approval in Principle (AiP) from the American Bureau of Shipping (ABS) for the design of ammonia fuel gas turbines intended for retrofitting on 174,000 cubic meter (174K) LNG carriers. This landmark approval, reported on September 12, 2025, showcases a successful collaboration that underscores the potential of ammonia as a sustainable maritime fuel in response to increasing global decarbonization efforts.

The project, which kicked off on August 13, 2025, is a pioneering initiative aimed at demonstrating the practical application and feasibility of converting existing vessels to run on ammonia, which, when burned, does not emit carbon dioxide. This crucial development aligns with the International Maritime Organization's (IMO) ambitious target to achieve carbon neutrality in international shipping by 2050

The Implications of Ammonia as a Maritime Fuel

Ammonia, a compound of nitrogen and hydrogen, has emerged as a viable alternative fuel in the maritime sector due to its zero carbon emissions upon combustion. Hanwha’s ambitious project spearheads the commercial viability of gas turbine propulsion systems fueled entirely by ammonia. The technology requires no ignition oil, thereby significantly reducing the environmental footprint of maritime operations.

In pursuit of stricter environmental regulations, the Ammonia Fuel Gas Turbine is positioned as a key player in achieving a carbon-free maritime market. The AiP from ABS signifies that essential technical documents, such as the Process Flow Diagram and the Emergency Shutdown System, have met international safety standards for ammonia-fueled vessels.

Strengthening Industry Collaborations

Hanwha Power Systems plans to leverage this Approval in Principle to design retrofit packages for various types of ships, including existing LNG carriers, thereby enhancing its position in the global market for ship decarbonization. By developing stronger partnerships with shipowners, shipyards, and classification societies, Hanwha aims to enable the practical implementation of this technology.

Hyoung-seok Kim, the head of the Maritime Solutions division at Hanwha Power Systems, emphasized that this success validates the technical and commercial potential of ammonia-powered gas turbine systems. "We will continue to advance collaboration with shipowners and shipyards to facilitate the practical application of this groundbreaking technology," he stated.

Participation in Gastech 2025

Hanwha Power Systems is set to participate in Gastech 2025, held in Milan, Italy, from September 9 to September 12, 2025. The event will not only allow Hanwha to showcase its ammonia gas turbine technology but also highlight its retrofit technologies for floating storage regasification units (FSRU) and natural gas ships (NRS). Furthermore, the company will introduce CO2 compressors vital in carbon capture and storage processes, reinforcing its commitment to achieving carbon neutrality goals in the maritime sector.

In conclusion, Hanwha Power Systems’ groundbreaking approval marks a significant step towards revolutionizing the shipping industry, encouraging a shift towards more sustainable operational practices through innovative technologies like ammonia fuel gas turbines.