HD Hyundai Draws U.S. Navy Focus on Anduril $6.6B Project

HD Hyundai Heavy Industries drew heightened naval scrutiny on Oct. 12 as defense contractor Anduril Industries moved ahead with a $6.6 billion project to expand American nuclear submarine production capacity.

The project commits $3.7 billion in private capital alongside up to $2.9 billion in U.S. Navy production contracts. The funds will establish Arsenal-2, a 2 million square foot manufacturing facility in Sparrows Point, Maryland.

Anduril designed the complex to manufacture torpedo tubes and modular structures for Virginia-class nuclear attack submarines. The U.S. Navy currently faces multiyear delivery backlogs on those attack boats at its domestic yards.

Market discussions in Seoul linked HD Hyundai to the venture following domestic reports on uncrewed undersea systems. However, company disclosures confirm the $6.6 billion allocation finances manned nuclear submarine infrastructure rather than uncrewed platforms.

HD Hyundai holds no equity stake or supplier contract in the Maryland facility. Neither Anduril nor the Pentagon has named the South Korean shipbuilder as a participant in Virginia-class hull construction.

The two companies maintain an active defense partnership across separate naval programs. They signed a strategic agreement in April 2024 to collaborate on autonomous naval systems and uncrewed vessels.

That partnership expanded in November 2025 into an autonomous surface vessel program. HD Hyundai is currently manufacturing an uncrewed surface vessel prototype at its primary shipyard in Ulsan.

The shipbuilders added an undersea initiative on April 22, 2026. During the Sea-Air-Space exposition in Maryland, both firms signed a memorandum of understanding to co-develop advanced uncrewed undersea vehicles.

South Korean equity analysts pointed to that undersea agreement to argue HD Hyundai could provide modular fabrication support for American yards. Domestic naval yards lead global commercial shipbuilding in automated block assembly.

U.S. defense regulations impose strict barriers against foreign involvement in nuclear propulsion programs. Federal statutes restrict the fabrication of nuclear submarine pressure hulls to certified domestic suppliers.

The Pentagon has sought commercial manufacturing technologies to alleviate industrial bottlenecks. American shipyards deliver roughly 1.2 Virginia-class submarines annually, falling short of the Navy's procurement target of two boats per year.

Anduril aims to narrow that production deficit by operating as a non-traditional defense hardware integrator. The Arsenal-2 plant will use commercial manufacturing automation to deliver structural subassemblies directly to naval prime contractors.

HD Hyundai has positioned its defense division to capture allied naval procurement demand. The company has conducted maintenance and overhaul work on auxiliary vessels for the U.S. Seventh Fleet.

South Korean yards possess drydock throughput and robotic welding systems that American shipyards lack. Integrating those capabilities into U.S. programs requires structural legal exemptions that remain unapproved.

Defense analysts in Seoul projected that modular manufacturing techniques from commercial yards could assist allied programs. Such integration remains confined to autonomous surface and undersea platforms under active bilateral agreements.

The U.S. Navy scheduled Arsenal-2 to begin component manufacturing operations by 2030. Construction at the Sparrows Point site will scale up structural production over the next four years.

Anduril and the U.S. Navy have not published any commercial agreement naming HD Hyundai as a supplier for Arsenal-2. The firms have also not released details regarding foreign participation in Virginia-class modular fabrication.

HD Hyundai plans to conclude sea trials for its autonomous surface craft prototype later this year. The company continues joint engineering work with Anduril on the separate uncrewed underwater vehicle design.