HD Hyundai and Hanwha win China dual-fuel engine contracts

South Korean marine engine builders secured more than 65% of their combined 2026 export orders from Chinese shipyards, according to industry contract filings compiled on Sept. 29, 2026.

The intake concentrates high-margin propulsion machinery in South Korea while Chinese shipyards handle lower-margin hull assembly. Propulsion systems represent more than 10% of total construction costs on large commercial vessels.

HD Hyundai Heavy Industries booked orders for 128 large marine propulsion engines worth 1.4 trillion won ($995 million) between January and August. Chinese shipyards accounted for 74.9% of that contract value, company data showed.

HD Hyundai Marine Engine booked 870.6 billion won ($594 million) in total engine orders during the same eight-month period. Chinese shipbuilders generated 65.4% of that intake, the engine maker said.

Chinese shipyards captured more than 70% of global commercial vessel orders this year. However, domestic Chinese engine builders lack the production capacity to supply high-output dual-fuel machinery at equal scale.

Dual-fuel engines burn conventional marine fuel oil alongside liquefied natural gas (LNG). Stricter greenhouse gas rules from the International Maritime Organization drove shipping lines toward those propulsion systems to avoid carbon penalties.

Hanwha Engine reported that dual-fuel models accounted for 83% of its total order backlog as of June 30, 2026. The company secured 976.8 billion won ($667 million) in Chinese orders in 2025.

That business represented about 45% of Hanwha Engine's total order value last year. Chinese yards turned to South Korean suppliers after filling dry docks with export container ships and tankers.

STX Engine signed a 78.59 billion won ($53.6 million) contract with China's New Times Shipbuilding on July 27, 2026. The engine builder filed the transaction notice on July 28, 2026.

STX Engine will supply propulsion units for dual-fuel container vessels ordered by Danish shipping line A.P. Moller-Maersk. Work under that agreement runs through July 25, 2029, the filing said.

HD Hyundai Heavy Industries finished type approval testing for its next-generation HiMSEN LNG dual-fuel engine, the H35CDF, on Sept. 23, 2026. The trials took place at its Ulsan technology center.

Seven maritime classification societies supervised the three-day evaluation, including the American Bureau of Shipping, DNV and Lloyd's Register. Korean Register, Bureau Veritas, ClassNK and RINA also approved the unit.

The H35CDF uses variable valve timing to adjust the air entering the combustion chamber. The mechanism raises fuel efficiency and cuts methane slip relative to earlier models, the division said.

HD Hyundai Marine Engine signed a 28 billion won ($19 million) engine contract with China's Wuhu Shipyard in June. Cumulative orders from the Wuhu Shipyard group passed 100 billion won this year.

The company booked 15 engine supply contracts in the first six months of 2026, totaling 672.7 billion won. Chinese builders took 12 of those contracts, representing 74.2% of total contract value.

Auxiliary equipment suppliers followed the engine builders into the Chinese market. Panasia is completing construction of its first overseas manufacturing plant in Rugao, Jiangsu Province, to produce marine exhaust gas scrubbers.

Commercial operations at the Rugao facility will begin in Dec. 2026, Panasia said. The plant will supply cleaning systems directly to Chinese yards building vessels for European carriers.

South Korean shipbuilders face dock capacity limits that prevent rapid assembly expansion at domestic yards. Engine manufacturers avoid that bottleneck by adding factory tooling and selling propulsion packages directly to Chinese rivals.

Korean engine builders maintained operating profit margins above 15% during the second quarter of 2026. In contrast, standard commercial shipyard margins across East Asia averaged single digits during the same period.

Commercial deliveries under the new dual-fuel contracts accelerate in the fourth quarter of 2026. STX Engine must deliver its final shipset to New Times Shipbuilding before July 25, 2029.

The corporate disclosures do not record an omnibus trade agreement, and South Korea's Ministry of Trade, Industry and Energy has not published an official export register for marine propulsion systems.

Chinese shipyards remain reliant on Korean machinery plants for more than two-thirds of their high-pressure dual-fuel engine requirements, trade filings show.