Hanwha Says Philly Shipyard Can Build U.S. Nuclear Submarines

Hanwha Group said today that its Philadelphia shipyard has the capability to build nuclear powered attack submarines for the U.S. Navy, signaling an ambitious move into a tightly controlled defense industrial sector. Speaking at a media day, Alex Wong, global chief strategy officer at Hanwha Group, asserted that the yard "has the capability of building a nuclear powered submarine for the U.S. Navy." He added, "The U.S. government's commitment to nuclear powered submarine capability, its own and of the allies is very strong," and "We stand ready to fulfil the ability to build those submarines here in Philly when the governments are ready."

The announcement lays out both the company appraisal of its current strengths and a candid list of gaps that would need to be filled before construction of U.S. Navy nuclear submarines could begin. Hanwha Ocean is undertaking modernization at the Philly facility, which has primarily produced commercial vessels, and executives said the yard is being prepared for more complex naval work. That said, key infrastructure elements required for nuclear subbuilding are not yet in place. Building nuclear powered attack submarines would require a roof covered assembly hall and a dedicated dry dock, neither of which exists today at the commercial focused site.

Hanwha said it has opened talks to acquire additional land or a new dock, and its head of shipyard operations confirmed expansion discussions, though the company offered no details on partners, locations, financing, or schedules. Korean sources described the Philadelphia site as "ideal" to accelerate Virginia class construction, and Hanwha highlighted its submarine pedigree, pointing to the design and construction of five of the six 3,000 ton diesel submarines in South Korea's Jangbogo III class as evidence of technical capability.

Any pathway to U.S. Navy construction at Philly would run through a complex chain of political, regulatory and industrial approvals. No government contract has been offered or announced, and national security rules govern the transfer of nuclear propulsion technology and sensitive submarine systems. Outside experts cited by company materials note that lead times are long; similar analyses project at least a decade before allied nations could deploy indigenous nuclear powered submarines even with strong political support, underscoring the multi year runway required for any U.S. Navy program to be based at a new site.

Market and regional implications are significant. U.S. submarine programs are multi billion dollar endeavors that sustain large supply chains and high skilled employment. If Hanwha were to secure work, it could introduce Korean subcontractors into U.S. naval production lines, boost economic activity in the Philadelphia region, and intensify competition for established shipbuilders. Policymakers will weigh industrial base diversification against security and oversight concerns, and Congress would play a central role in any approvals or funding.

For now, Hanwha frames the announcement as a readiness claim rather than a contract award. The company stands ready to expand capacity, but a sequence of investment decisions, government approvals, and technical adaptations must be completed before nuclear submarine construction could move from proposal to production.