The Philadelphia-based shipyard, acquired by Hanwha Group for about $100 million in 2024, has been selected to build Missile Range Instrumentation Vessels (MRIVs) for the U.S. Missile Defense Agency. The specialized ships will track missile tests and collect flight and telemetry data, supporting Washington's expanding missile defense network and President Donald Trump's Golden Dome missile defense initiative.
The award represents far more than a shipbuilding contract. It is the clearest sign yet that Washington is beginning to integrate South Korea's globally competitive shipbuilding expertise into efforts to rebuild America's strained maritime industrial base while remaining within U.S. domestic production rules.
The project also illustrates the contrasting strengths Hanwha brings to the partnership.
In South Korea, Hanwha Ocean operates one of the world's largest and most advanced shipbuilding complexes in Geoje. Spanning roughly 4.9 million square meters, the yard houses the world's largest one-million-ton dry dock and a 900-ton Goliath crane, enabling construction of everything from LNG carriers and 23,000-TEU container ships to offshore platforms, destroyers and submarines. It is also the world's largest builder of very large crude carriers (VLCCs).
Hanwha Philly Shipyard is considerably smaller. Located within Philadelphia's historic Navy Yard, the 47.8-hectare (110-acre) facility has traditionally focused on commercial shipbuilding and maintenance, repair and overhaul (MRO). It nevertheless possesses one of the largest graving docks in the United States, measuring 332.8 meters long and 45.7 meters wide, supported by a 660-ton gantry crane capable of assembling ultra-large vessel blocks.
Despite its relatively modest size, the yard has built roughly half of all large oceangoing Jones Act commercial vessels delivered in the United States since 2000, giving Hanwha an established American manufacturing platform that few foreign shipbuilders can match.
The timing is significant as shipbuilding has rapidly emerged as one of the fastest-moving areas of defense-industrial cooperation between Seoul and Washington.
The United States faces mounting pressure to expand naval production as prolonged military commitments, rising competition with China and growing missile defense requirements expose the limits of its shipbuilding capacity.
The issue has reached the highest political level.
During last month's G7 summit, President Donald Trump asked President Lee Jae Myung whether South Korea could quickly build 10 warships for the United States. The subject surfaced again when the two leaders met on the sidelines of the NATO summit earlier this month.
Trump has also publicly identified South Korean shipbuilders as potential partners in revitalizing U.S. naval production.
"We're going to probably look at some of these companies that are coming in from South Korea and other places," Trump said during a recent defense event in Pennsylvania.
The Pentagon has already begun laying the groundwork.
Against that backdrop, Hanwha's MRIV contract is widely viewed as an early test case for how South Korean shipbuilders could participate in future U.S. naval programs without directly building warships overseas.
U.S. law generally requires Navy warships and critical hull components to be built domestically, limiting the role of foreign shipyards. Hanwha Philly Shipyard, however, operates with American workers, suppliers and production facilities, allowing projects there to satisfy domestic-content requirements while drawing on Korean engineering expertise and management.
Philadelphia itself is also becoming an increasingly important defense manufacturing hub.
According to The Wall Street Journal, JPMorgan Chase will provide $24 million through investments, loans and grants to support submarine manufacturing and workforce development in Philadelphia. Part of the funding will help Rhoads Industries, a supplier to General Dynamics Electric Boat, build a new submarine manufacturing facility.
Local media report that Rhoads Industries and General Dynamics Electric Boat have secured a 10-year, $2.5 billion agreement supporting U.S. Navy submarine construction and approximately 1,350 jobs through 2035.
Separately, Hanwha Philly Shipyard has received about $1.5 billion in National Security Multi-Mission Vessel orders, supporting more than 2,000 jobs and reinforcing the Navy Yard's emergence as one of Washington's priority maritime industrial centers.
According to U.S. naval industry media, the missile-tracking vessels will use the existing hull design and production line developed for the National Security Multi-Mission Vessel program, allowing the Missile Defense Agency to accelerate production without developing an entirely new platform.
U.S. Office of Management and Budget Director Russell Vought described the Philadelphia yard as a "hot production line," saying the project would leverage Hanwha Philly Shipyard's experienced workforce to support both the Missile Defense Agency and Trump's Golden Dome initiative.
Industry officials believe the award could help Hanwha establish a critical track record in U.S. defense shipbuilding as it seeks to expand the Philadelphia yard's role beyond commercial ships and government support vessels.
The company has already expressed interest in future U.S. Navy programs involving auxiliary vessels and, eventually, combat ships. It has also announced plans to expand production capacity at the Philadelphia facility.
Analysts caution, however, against viewing the MRIV award as a direct step toward building the 10 warships mentioned by Trump.
The missile-tracking vessels are specialized support ships rather than destroyers, frigates or other frontline combatants. The Philadelphia yard would also require substantial investment in facilities, equipment and workforce before it could undertake large-scale naval ship construction.
According to Defense News, the Senate Armed Services Committee's version of the fiscal 2027 defense authorization bill would limit presidential authority to approve construction of U.S. Navy vessels at foreign shipyards. The proposal would permit no more than two vessels per class to be built at allied shipyards and only for limited categories of auxiliary vessels, including fuel tankers and roll-on/roll-off ships.
Even so, the Philadelphia project offers perhaps the strongest example yet of a model Washington increasingly appears willing to embrace: combining South Korea's shipbuilding technology, engineering know-how and capital with American production facilities, suppliers and workers.
Ryu Yeon-seung, director of the Institute for Defense Industrial Security, said Korean companies should pursue a broader role beyond hull construction.
"If a ship designed by Korea is adopted, Korean-made components should be included as much as possible," Ryu said. "That can naturally lead to maintenance, repair and overhaul because MRO also involves replacing those components."
For South Korea, the project strengthens its position in broader defense-industrial negotiations while opening opportunities for Korean equipment suppliers throughout the naval supply chain.
For the United States, it provides a practical way to reinforce an overstretched shipbuilding base without relying exclusively on existing domestic defense contractors.
The project also aligns with broader bilateral investment commitments. According to the White House, Hanwha Ocean has invested $70 million in U.S. maritime manufacturing. Under the joint fact sheet released after the Trump-Lee summit in November 2025, South Korea pledged $150 billion in U.S. shipbuilding investments and an additional $200 billion in other strategic sectors, making maritime cooperation one of the largest pillars of the allies' expanding economic and security partnership.
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