HD Hyundai Heavy Industries Signed Portuguese Navy Accord
The shipbuilding firm partnered with Portugal to explore small submarine development at a defense exhibition.
Updated on Sept. 24, 2026 in International Relations
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HD Hyundai Heavy Industries has signed a memorandum of understanding with the Portuguese Navy to collaborate on shipbuilding and maintenance. The deal was finalized at the International Maritime Defense Industry Exhibition 2025 in Busan, South Korea.
Why it matters
The company aims to expand its influence in the global warship market by leveraging advanced naval technologies and fostering strategic partnerships. These collaborations are designed to enhance its international presence through joint service and hardware development.
HD Hyundai Heavy Industries unveiled three submarine export models ranging from 800 to 2,300 tons at the exhibition. The firm also formalized multiple agreements with international and domestic defense contractors.
The players
HD Hyundai Heavy Industries
This is a global shipbuilding corporation based in South Korea that provides industrial solutions.
Portuguese Navy
This is the naval branch of the Portuguese Armed Forces responsible for maritime operations.
POSCO
This is a major South Korean multinational steel-making company headquartered in Pohang.
Leonardo
This is an Italian aerospace, defense, and security company based in Rome.
Thales
This is a French multinational company that designs and builds electrical systems for the defense sector.
The details
The firm signed additional memorandums of understanding with POSCO, Leonardo, Thales, Korea Aerospace Industries, and LIG Nex1. These agreements target various strategic goals, including the creation of specialized naval hull materials and the joint development of a multi-purpose unmanned power carrier.
Timeline
Wednesday: HD Hyundai signed an agreement with POSCO.
Friday: HD Hyundai signed an agreement with the Portuguese Navy.
Political Context
The International Maritime Defense Industry Exhibition 2025 provides the stage for these strategic alliances. These agreements align with broader efforts by South Korean defense contractors to deepen global integration through technological exports.
These international partnerships largely impact defense procurement policies rather than the immediate daily costs for individual taxpayers. Residents may see shifts in regional defense capabilities as nations update their naval fleets through these collaborative efforts.
The takeaway
The move signals a significant push by South Korean firms to secure long-term contracts in the European defense market. Future collaborations will likely focus on integrating autonomous technologies into standard naval hardware to meet modern military requirements.
Further reading
Explore more analysis in our International Relations section.
Source note: This article includes information reported by Pulse.
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