The idea is simple: rebuild American shipbuilding by using the Great Lakes as a strategic inland shipbuilding corridor, expand industrial capacity where factories and skilled workers already exist, and leverage policy tools to speed production so the United States can compete with China. This piece argues that the fourth coast can help close glaring gaps in military and commercial shipbuilding, and that a focused, results-driven approach aligned with conservative priorities would make the nation more resilient. It highlights existing Great Lakes shipyards, identifies policy proposals like targeted incentive zones, and points to practical limits and realistic targets for what inland yards should build. The tone is pro-American, practical, and aimed at persuading policymakers to act with urgency.
Shipbuilding has long been a coastal business, but geography does not have to be destiny. The Great Lakes region already hosts substantial industrial infrastructure and a skilled workforce used to heavy manufacturing, which makes it a logical place to expand capacity. Building more ships there would not replace coastal yards, but would diversify production and shorten the time it takes to replace vessels in a crisis. Strategic redundancy matters when an adversary is outproducing us on a scale that threatens our ability to maintain naval superiority.
China’s recent shipbuilding pace is a wake-up call for any administration that takes national defense seriously. If an armed conflict in the Pacific required rapid replacement of hulls and auxiliary ships, the U.S. cannot afford to be limited to a few coastal yards with long lead times. The Great Lakes are connected to the Atlantic through the St. Lawrence Seaway, giving inland yards a practical route for delivering many classes of ships. That connection, combined with inland security and a deep industrial base, creates a compelling strategic hedge.
In 2024, Beijing’s largest ship maker produced 250 ships. Combined, these ships could carry the weight of the total number of ships America has produced since World War II, according to the Center for Strategic and International Studies. If war were to break out in the Pacific the U.S. shipbuilding industry would not be able to repair and replace losses at the rate in which Chinese shipyards could. In a conflict over Taiwan or over the South China Sea, the ability to produce and replace ships would be key to a naval victory. Such a conflict would almost certainly be fought primarily on the seas. This gap in shipbuilding capabilities cannot go unnoticed. While many are focused on the size of the United States navy, and keeping pace with Beijing, there is an overlooked problem preventing America from keeping pace with China in terms of commercial and military shipbuilding capacity. The root of the problem is America’s decaying industrial base, and the solution may lie in an unlikely place: the Great Lakes.
There are already shipyards in the region, including facilities in Wisconsin and other Midwestern ports, though many focus on repairs or smaller vessels. That base can be expanded without starting from scratch: existing plants, suppliers, and logistics networks provide a foundation for scaling up. Investment targeted where results can be measured will produce the fastest return for taxpayers and the military. The aim is more hulls in less time, not vanity projects that only coastal yards can handle.
Practical limits matter. The Great Lakes are not where you would build nuclear supercarriers, and it’s honest to say that some large classes will remain coastal projects. But the Navy needs many more frigates, destroyers, and auxiliary vessels—the “little gray ships” that a wartime fleet depends on. Producing those vessels faster and closer to a concentrated industrial workforce would improve surge capacity and make the whole enterprise more resilient to disruption. Prioritizing modular designs and dual-use ship classes could speed production and allow inland yards to contribute meaningfully.
Modeled after Opportunity Zones, Maritime Prosperity Zones would target investment to shipbuilding hubs within the Great Lakes, or the Fourth Coast, meaning America’s fourth coastal area after the Atlantic, Pacific, and Gulf coasts. These zones would combine tax incentives, accelerated depreciation for shipyard modernization, and direct federal contracts tied to shipbuilding capacity expansion. Nowhere is this opportunity clearer than in the Great Lakes, which already possess the industrial muscle, port access, and workforce density to serve as the nation’s next-generation shipbuilding corridor.
The Great Lakes are the only region with a continuous chain of maritime manufacturing hubs, Cleveland, Detroit, Toledo, Chicago, Milwaukee, and Duluth, sitting within a single integrated logistics ecosystem. By tying incentives to measurable outputs such as reduced production lead times, new apprenticeships, or dual-use vessel construction, policymakers can ensure that taxpayer investment translates into tangible industrial resilience and results. Just as the Arsenal of Democracy once converted automobile plants into tank factories during World War II, Maritime Prosperity Zones would mobilize America’s industrial base.
A results-first plan would combine private sector know-how with clear federal demand signals, like phased contracts tied to production metrics. Apprenticeship programs and targeted training would turn regional labor pools into a steady supply of qualified shipbuilders and technicians. Conservative policymakers should favor incentives that reward measured outcomes and rapid scaling rather than open-ended subsidies. That mix respects taxpayers and gets tangible increases in national defense capability.
This is the kind of pragmatic, common-sense industrial policy conservatives can and should get behind: strengthen American manufacturing, protect supply lines, and ensure we can outproduce an adversary if it comes to that. The Great Lakes are not a cure-all, but they are a realistic, underused asset that aligns with Republican priorities of national strength and industrial renewal. Acting now to mobilize those resources increases deterrence and gives the Navy options it does not have today.
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