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Hanwha Power Systems Secures AiP for 174K LNG Carrier Ammonia Fuel Turbine

In a significant advancement towards sustainable maritime operations, Hanwha Power Systems has recently announced the receipt of Approval in Principle (AiP) from the American Bureau of Shipping (ABS). This AiP pertains to the design of a conversion project aimed at retrofitting 174,000 LNG carriers with an ammonia fuel gas turbine. This groundbreaking initiative was unveiled at Gastech 2025 held in Milan, Italy.

The incorporation of ammonia as a fuel offers a promising alternative for achieving carbon neutrality in maritime transport owing to its composition of nitrogen and hydrogen, which ideally produces no carbon dioxide emissions upon combustion. This technology is anticipated to pave the way for a decarbonized shipping sector by aligning with the International Maritime Organization's (IMO) objective of achieving carbon neutrality in the maritime industry by 2050.

The AiP signifies a profound collaboration between Hanwha and ABS, initiated on August 13, 2025, culminating in successful engineering design and safety verification processes completed in a remarkably short time frame. Hyoung-seok Kim, head of the maritime solutions division at Hanwha Power Systems, expressed confidence in the project, remarking, "This AiP demonstrates the technical and commercial viability of gas turbine propulsion systems using ammonia fuel. We are committed to further collaboration among shipowners, shipbuilders, and classification societies to implement this technology in practical applications."

The Pathway to Decarbonization

As the maritime industry grapples with emergent environmental regulations, retrofitting existing LNG carriers with ammonia fuel systems represents a proactive response to these challenges. The ABS's comprehensive review of critical engineering documents, including flow process diagrams, operational philosophies, equipment lists, and safety measures, affirms the retrofit's adherence to international maritime safety standards. The approval indicates not only Hanwha's innovation in marine engineering but also its assurance of safety and reliability in the practical application of propane systems.

The implications of retrofitting fleets to utilize ammonia fuel are multifaceted. Not only does this initiative demonstrate a commitment to sustainability, but it also aims to solidify Hanwha's positioning within the growing global market dedicated to maritime decarbonization. As naval architects and marine engineers navigate the complexities of converting traditional vessels to ammonia fuel, Hanwha is also exploring partnerships with shipowners and shipyards. This collaborative approach is expected to unveil various modernization packages, expediting the industry's transition towards greener, more sustainable operations.

Moreover, Hanwha's presence at Gastech 2025 extends beyond ammonia gas turbines. The exhibit showcases the company’s innovations including FSRU modification technologies, crucial for achieving carbon capture and storage (CCUS) goals. These advancements underline Hanwha Power Systems' commitment to offering comprehensive solutions that assist maritime operators in achieving ESG targets.

In conclusion, the approval of the ammonia fuel retrofit for 174K LNG carriers not only marks a transformative step for Hanwha Power Systems but also sets a vital precedent for the maritime industry's journey towards achieving carbon neutrality. With the backing of ABS and collaborative efforts with key stakeholders, Hanwha is poised to lead the way in the marine sector's decarbonization efforts for years to come.