The US Navy’s urgent search for foreign frigate designs has a clear logic: speed matters. By considering foreign frigate designs such as Japan’s Mogami-class, South Korea’s Chungnam-class, and Turkey’s Istanbul-class, the Navy can rapidly scale its surface combatant force while rebuilding domestic shipbuilding capacity. This debate is not merely about buying hulls; it is about the trade-offs between capability, industrial policy, and national security.

Why the US Navy is eyeing foreign frigate designs

America’s maritime posture faces a stark numerical gap with the People’s Liberation Army Navy (PLAN). Though the US maintains qualitative superiority in carriers, submarines, and destroyers, China’s sheer number of small and medium surface combatants creates operational dilemmas for distributed lethality and escort duties. Consequently, foreign frigate designs offer an attractive shortcut to immediate hull numbers.

Moreover, the White House and Pentagon have framed this shift as industrial policy as much as naval procurement. The 2027 budgetary move to acquire up to two foreign-built vessels, followed by stateside production through technology transfer, is intended to seed American shipyards with new work and expertise. In short, speed to fleet and revival of shipbuilding are the twin motivations driving interest in foreign frigates.

Comparing Mogami, Chungnam, and Istanbul frigate designs

At first glance, the three candidate designs represent distinct philosophies of frigate construction. Japan’s Mogami-class prioritizes long range and heavy VLS loadouts, South Korea’s Chungnam-class emphasizes balanced ASW and multirole systems, and Turkey’s Istanbul-class reflects cost-effective modularity and export-minded systems integration. These are not interchangeable options; each brings different operational trade-offs.

Japanese Mogami-class: range and firepower

The Mogami-class stands out for endurance and a robust Mk-41 style VLS capacity. With a reported 5,500-ton full-load displacement and long-range endurance approaching 10,000 nautical miles, Mogami-derived hulls could support forward presence and blue-water escort missions. Furthermore, its suite of anti-air, anti-surface, and anti-submarine capabilities aligns with high-end naval engagements.

However, critics will note that scale and complexity raise costs and integration challenges, especially if the Navy insists on American sensors, combat systems, and ordnance. Therefore, adopting Mogami would demand deeper technology transfer and extensive retrofitting to meet US interoperability standards.

South Korea’s Chungnam-class: a pragmatic multirole option

The Chungnam-class is a middleweight design with modern ASW tools, a credible VLS option, and a history of fast domestic production in South Korea. At roughly 3,600–4,300 tons depending on load, Chungnam hulls could be cheaper per unit and quicker to produce. This makes them attractive if the Navy’s priority is numbers and deployable escorts for carrier strike groups and amphibious forces.

Still, South Korean electronics and weapon standards differ from NATO norms in certain areas, so careful work would be required to ensure seamless integration with US combat systems and logistics chains. In other words, speed is possible, but not without deliberate interoperability planning.

Turkish Istanbul-class: modularity and export pedigree

Turkey’s Istanbul-class showcases modular weapons bays, an emphasis on indigenous missile systems, and a smaller hull form that fits well in littoral theaters. The class has been designed for export and upgradeability, which could simplify transfer packages and local construction efforts in the United States.

On the other hand, Ankara’s geopolitical posture and technology provenance raise tougher political questions in Washington. Any Turkish transfer would require assurances on software, subsystems, and supply-chain security—issues not easily resolved by production contracts alone.

Legal, industrial, and security hurdles to foreign-built warships

Even if foreign frigate designs are attractive, domestic law complicates direct acquisition. Title 10 USC 8679 prohibits foreign-built warships from US Navy service unless waived on national security grounds. The administration has signaled willingness to invoke such waivers, but Congress may push back to protect American shipbuilding jobs and sovereignty.

More importantly, technology transfer and supply-chain integrity pose nontrivial national security risks. Radar and combat-system software, secure communications, and munitions sourcing must be carefully controlled. Consequently, any agreement should prioritize onshore construction, thorough vetting of subcontractors, and long-term commitments to American workforce development.

The strategic imperative: why numbers and speed matter against the PLAN

Strategically, the US cannot cede littoral and escort missions to numerical inferiority. The PLAN’s expansive hull count—whether 400 or as many as 700 when support vessels are included—creates an operational need for more frigates, corvettes, and small surface combatants. These hulls perform convoy protection, sea-control patrols, and distributed anti-submarine warfare missions that destroyers and cruisers cannot economically fulfill.

Therefore, bridging the gap with foreign-frigate-derived designs is not a sign of decline but of pragmatic force management. The Navy must field a layered fleet: high-end capital ships complemented by numerous, capable frigates to preserve sea lines of communication and deter gray-zone coercion.

Lessons from the Constellation-class failure

The Constellation-class debacle—cancellation after years of overruns and schedule slippage—offers a cautionary tale. The attempt to heavily modify a proven FREMM design led to cost growth and delays, underscoring that marrying exotic customization to rapid procurement is risky. If foreign designs are to help, the Navy must avoid excessive redesign that negates speed and affordability.

Consequently, the best course is selective adaptation: accept core foreign hull and engineering standards where possible, and limit US-specific modifications to essential combat systems and interoperability requirements. This approach preserves schedule benefits while protecting critical American capabilities.

A pragmatic path: technology transfer, domestic yards, and workforce expansion

Transitioning to American construction must be more than symbolic. Foreign shipbuilders should be required to invest in US shipyards, establish technology-sharing agreements, and train American workers. The effective transfer of shipbuilding skills is the strategy’s lynchpin; without it, short-term gains in hull numbers will not produce lasting industrial capacity.

Moreover, investments should focus on modular construction, standardized interfaces, and digital shipbuilding tools that accelerate future production. In this way, the Navy gains immediate hulls while fostering an ecosystem that can sustain a higher tempo of shipbuilding for decades.

What to demand in contracts

First, the Navy should insist on a clear timeline for domestic production ramp-up, with penalties if foreign firms fail to meet commitments. Second, full intellectual property transfer for platform engineering and essential subsystems should be negotiated upfront. Third, contracts must embed security audits, supply-chain transparency, and a roadmap for US-made weapon and sensor integration.

Finally, workforce development programs—apprenticeships, certifications, and facility upgrades—should be mandatory. These commitments convert foreign designs into durable American industrial advantages rather than temporary stopgaps.

Anticipating counterarguments: sovereignty, espionage, and political pushback

Opponents will argue that foreign designs risk espionage and undermine American shipbuilding sovereignty. This is a valid concern; however, a binary choice—foreign designs or nothing—is a false dichotomy. With careful contract design, rigorous security measures, and a staged transfer of construction, those risks can be mitigated while preserving strategic gains.

Additionally, political resistance in Congress can be addressed through transparent oversight and clear metrics showing how foreign partnerships will translate into domestic jobs, facilities, and long-term capacity. In other words, the program should offer tangible political benefits to win necessary support.

Final assessment and a call to pragmatic action

The debate over foreign frigate designs is fundamentally about how the US balances urgency with sovereignty. The Navy’s consideration of Mogami, Chungnam, and Istanbul designs represents a pragmatic recognition that rebuilding a resilient surface combatant fleet will take both ingenuity and cooperation. Rather than view foreign options as a shortcut or an abdication of American industry, policymakers should treat them as a strategic lever to accelerate capability while demanding strict technology-transfer and domestic-production guarantees.

Consequently, the right path combines immediate procurement of proven foreign hulls with binding commitments to American construction, workforce training, and supply-chain security. That hybrid approach preserves US operational needs, protects national security, and revives an industrial base essential for long-term maritime competitiveness. Readers should expect intense debate in the months ahead, and they should press elected officials to prioritize enforceable domestic-building clauses and clear performance metrics in any frigate deal. Doing so will turn a short-term procurement fix into a sustainable advantage for the fleet.