When Continental Powers Rise at Sea: China’s Maritime Balancing Escalation
This article challenges classical geopolitical expectations by arguing that continental powers like China may shift from cost-effective sea denial to costly maritime balancing escalation when landward security burdens ease, the power gap with maritime rivals narrows, and ruling elites prioritize sea power.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
For centuries, a simple rule of geography seemed to dictate how nations built their armies. If a country was surrounded by land and neighbors with powerful armies, it was expected to focus almost entirely on its ground forces. The logic was straightforward: land borders are the most immediate threat, so the most expensive and complex tools of war, like a massive navy, were seen as a waste of resources. Instead, these land-locked or land-focused powers were expected to use clever, cheaper tricks to stop enemies at sea, such as hiding submarines or using missiles from the shore. This idea suggested that a country's geography locked it into a specific strategy, preventing it from ever truly competing with the world's greatest sea powers.
However, the world is changing, and the rules of this game are shifting. A new study from researchers at Tsinghua University and the Ocean University of China asks a difficult question: what happens when a land-focused power decides to stop playing by the old rules? They look at China, a nation that for decades relied on cheap, defensive tricks to keep the powerful American navy at bay. In recent years, China has begun building a fleet that looks very different: it now includes large aircraft carriers, massive warships, and the ability to fight far away from its own shores. The researchers wanted to understand why a country would take on such a huge financial burden when it still has land borders to defend. They argue that this shift didn't happen by accident or just because of pride; it happened because a specific set of conditions finally aligned to make it possible.
The study, titled "When Continental Powers Rise at Sea," challenges the old belief that geography is destiny. The authors propose a concept they call "maritime balancing escalation." In plain terms, this describes the moment when a country stops trying to just annoy or delay a stronger navy and starts trying to beat it at its own game. It is the move from building a few fast boats to hide behind rocks, to building a full fleet of giant ships that can sail anywhere and fight on the open ocean. The researchers suggest that this dramatic shift only occurs when four things happen at the same time. First, the pressure from land neighbors must ease up, freeing up money and attention. Second, the country must become rich and industrially strong enough to afford the expensive ships without bankrupting itself. Third, the threat from the rival navy must feel more urgent and dangerous. Finally, the country's leaders must decide that controlling the sea is now a top priority for their nation's future.
China serves as the perfect example for this theory. For a long time, the Chinese navy was small and focused entirely on protecting the coastline. It relied on submarines and missiles fired from the land to make it too dangerous for an enemy fleet to come close. This was a smart, cost-effective strategy for a country that had to worry about its massive land borders and limited money. But starting in the early 2010s, the situation began to change. The land borders became much safer; disputes with neighbors were settled or stabilized, and the threat of a massive land war faded. At the same time, China's economy exploded, and its shipbuilding industry grew to become the largest in the world. Suddenly, the country had the money and the factories to build a modern fleet without sacrificing its economic growth.
At the same time, the threat from the United States seemed to grow sharper. The American navy began moving more of its ships closer to Asia and adopted strategies that looked like they were designed to block China's access to the ocean. The Chinese leadership, seeing these changes, began to view the sea not just as a barrier to defend, but as a space to control. They started building aircraft carriers, large destroyers, and supply ships. Sometime between 2015 and 2020, the Chinese navy surpassed the American navy in the number of battle-force ships, though the American fleet remained larger in total weight and experience. By 2024, the PLAN fielded more than 370 platforms compared with 296 in the U.S. Navy. The key change was not just the number of ships, but what those ships could do. China was no longer just trying to stop the enemy from coming close; it was building a force capable of sailing far away, protecting trade routes, and fighting in the open ocean. This included the Fujian carrier, commissioned in 2025 with electromagnetic catapults that widened the functions of Chinese carrier aviation.
The researchers found that this transformation was not a sudden decision made by one leader, but the result of these four conditions coming together. Before the early 2010s, China simply could not afford to build a blue-water navy because it still faced serious land threats and lacked the industrial capacity. Even if the leaders wanted to, the math didn't work. But as the land threats faded and the economy grew, the cost of building a big navy became manageable. When the American navy then increased its presence in the region, the Chinese leaders felt a new urgency to match that power. They decided that having a strong navy was essential for their country's safety and status.
This study suggests that geography does not have to trap a country in a single strategy forever. While land borders are always a factor, the pressure they create can change over time. When that pressure drops and the money is available, a country can choose to take a much bigger risk and build a powerful navy. The authors warn that this kind of escalation is dangerous. As China builds a stronger fleet, it might make its neighbors feel less safe, pushing them to get closer to the United States for protection. This could create a new kind of pressure on China's land borders, undoing the very safety that allowed it to build the navy in the first place. It is a delicate balance: a country can become strong enough to challenge a sea power, but if it pushes too hard, it might recreate the land-based problems it spent decades trying to solve.
The paper does not claim that China has already beaten the United States or that it will soon rule the oceans. The American navy remains far more experienced and powerful in many ways. Instead, the study shows how a land-focused power can evolve into a serious maritime competitor when the right conditions appear. It highlights that the path to becoming a sea power is not just about having a coastline; it is about having the right mix of safety, wealth, threat, and political will. For the future, this means that the competition between China and the United States will likely continue to intensify, not because of geography alone, but because of how these two nations respond to each other's growing strength. The struggle is no longer just about who has the bigger army on land, but about who can control the sea without making the other side feel so threatened that they fight back harder.
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