Yes, There’s A Massive Ship Elevator In China






The Three Gorges Dam on China’s Yangtze River was so huge it actually altered the Earth’s rotation. Containing around 44 billion tons of water, this dam is the largest in the world. To match the scale of this project, China needed to make infrastructure that was equally massive, including an elevator that can lift entire ships.

Resembling a huge, windowless building, this elevator is capable of hoisting vessels that weigh up to 3,000 metric tons straight up the side of the dam. Of course, 3,000 tons is modest compared to some of the biggest ships the world has ever seen, but it’s still impressive the elevator can hoist this size ship 370 feet up.

This ship lift has been operational for about a decade, carrying over a million passengers and 15 million tonnes of cargo as of February 2024. It was created because the dam, while generating huge amounts of power, essentially ended up acting as a 175-meter-tall barrier along the Yangtze, which is China’s longest river. Much like the Panama Canal, the Three Gorges Dam did operate a system of five-stage locks that allowed ships to climb like a staircase through the dam to pass through one of the country’s most important waterways. However, it took ships nearly three hours to get through. The lift slashed that down to roughly 40 minutes. 

Operating this massive ship elevator

Building something this huge was no easy feat. The original plan was approved way back in 1992, which was around the same time the construction of the broader Three Gorges project itself kicked off. Initially, the idea was to use steel cables to suspend the lift chamber, but that was scrapped because of concerns about instability. Then, in 2003, a German engineering firm called Krebs and Kiefer came up with something different that used the Archimedes’ principle. 

This is the same science that explains how massive Navy ships actually float despite their weight. The basic idea is that if you have a chamber full of water and you drop a ship in, the ship pushes out water equal to its own weight. In this case, concrete counterweights suspended from cables are pushed down into the water, displacing the water and lifting this elevator.

Then, four gear-driven mechanisms arranged symmetrically around the chamber lock the ship in place at four support points. Those prevent the water inside from tilting or sloshing around, which is important to prevent imbalances. Additionally, there are also damping systems in place to absorb any seismic forces. As highlighted by the Global Times, they work by transferring any excess energy into the tower columns, which prevents the chamber from dropping. This basically makes the elevator resistant to earthquakes.





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In the ever-shifting geopolitical sphere, China’s growing military presence and the ongoing tensions over Taiwan and the South China Sea continue to be a closely watched topic — particularly in regard to China’s ambition for naval power. In recent years, much speculation has been made over the country’s rapid military development, including the capabilities of the newest Chinese amphibious assault ships.

While there’s no denying its military advancements and buildup, much has been made about the logistical and military difficulties that China’s People’s Liberation Army (PLA) would face if it launched an amphibious invasion of Taiwan. However, there’s growing concern that if a Taiwan invasion were to happen, it wouldn’t just be military vessels taking part in the action, but a fleet of commercial vessels, too — including a massive new car ferries that could quickly be repurposed into valuable military transports.

While the possibility of the PLA using commercial vessels for military operations has always been on the table for a potential Taiwan invasion, the scale with which China has been expanding its commercial shipbuilding industry has become a big factor in the PLA’s projection of logistical and military power across the Taiwan Strait. It’s also raised ethical concerns over the idea of putting merchant-marked ships into combat use.

From car ferry to military transport

The rapid growth of modern Chinese industrial capacity is well known, with Chinese electric vehicle factories now able to build a new car every 60 seconds. Likewise, China has developed a massive shipbuilding industry over the last 25 years, with the country now making up more than half of the world’s shipbuilding output. It’s from those two sectors where China’s latest vehicle-carrying super vessels are emerging. 

With a capacity to carry over 10,000 new vehicles for transport from factories in Asia to destinations around the world, these ships, known as roll-on/roll-off (Ro-Ro) ferries, are now the biggest of their type in the world. The concept of the PLA putting civilian ferries into military use is not a new one, or even an idea China is trying to hide. Back in 2021, China held a public military exercise where a civilian ferry was used to transport both troops and a whole arsenal of military vehicles, including main battle tanks.

The relatively limited conventional naval lift capacity of the PLA is something that’s been pointed out while game-planning a Chinese amphibious move on Taiwan, and it’s widely expected that the PLA would lean on repurposed civilian vessels to boost its ability to move soldiers and vehicles across the Taiwan Strait. With these newer, high-capacity Ro-Ro ferries added to the fleet, the PLA’s amphibious capacity and reach could grow significantly.

A makeshift amphibious assault ship

However, even with the added capacity of these massive ferries, military analysts have pointed out that Ro-Ro ships would not be able to deploy vehicles and soliders directly onto a beach the way a purpose-built military amphibious assault ship can. Traditionally, to deploy vehicles from these ships, the PLA would first need to capture and then repurpose Taiwan’s existing commercial port facilities into unloading bases for military vehicles and equipment.

However, maybe most alarming is that satellite imagery and U.S. Intelligence reports show that, along with increasing ferry production output, the PLA is also working on a system of barges and floating dock structures to help turn these civilian ferries into more efficient military transports. With this supporting equipment in place, ferries may not need to use existing port infrastructure to bring their equipment on shore.

Beyond the general military concern over China’s growing amphibious capability, there are also ethical concerns if China is planning to rapidly put a fleet of civilian merchant vessels into military service. If the PLA were to deploy these dual-purpose vessels into direct military operations, the United States and its allies would likely be forced to treat civilian-presenting ships as enemy combatants. On top of all the other strategic challenges a Taiwan invasion would bring, the U.S. having to navigate the blurred legal lines between military and merchant vessels could potentially give China a strategic advantage amidst the fog of war.





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