Why the world’s container ships grew so big

The traffic jam at the Suez Canal will soon begin easing, but behemoth container ships such as the one that blocked that crucial passageway for almost a week and caused headaches for shippers around the world aren’t going anywhere.

Global supply chains were already under pressure when the Ever Given, a ship longer than the height of the Empire State Building and capable of carrying furnishings for 20,000 apartments, wedged itself between the banks of the Suez Canal last week. It was freed earlier this week, but it left behind “disruptions and backlogs in global shipping that could take weeks, possibly months, to unravel,” according to A.P. Moller-Maersk, the world’s largest shipping company.

The Ever Given caused global shipping chaos that could take months to resolve when it got stuck in the Suez Canal. Credit:Suez Canal Authority via AP

The crisis was short, but it was also years in the making.

For decades, shipping lines have been making bigger and bigger vessels, driven by an expanding global appetite for electronics, clothes, toys and other goods. The growth in ship size, which sped up in recent years, often made economic sense: Bigger vessels are generally cheaper to build and operate on a per-container basis. But the largest ships can come with their own set of problems, not only for the canals and ports that have to handle them, but for the companies that build them.

“They did what they thought was most efficient for themselves — make the ships big — and they didn’t pay much attention at all to the rest of the world,” said Marc Levinson, an economist and author of Outside the Box a history of globalisation. “But it turns out that these really big ships are not as efficient as the shipping lines had imagined.”

Despite the risks they pose, however, massive vessels still dominate global shipping. According to Alphaliner, a shipping-data firm, the global fleet of container ships includes 133 of the largest ship type — those that can carry 18,000 to 24,000 containers. Another 53 ships are on order.

The world’s first commercially successful container trip took place in 1956 aboard a converted steamship, which transported a few dozen containers from New Jersey to Texas. The industry has grown steadily in the decades since, but as global trade accelerated in the 1980s, so did the growth of the shipping industry — and ship size.

In that decade, the average capacity of a container ship grew by 28 per cent, according to the International Transport Forum, a unit of the Organisation for Economic Cooperation and Development. Container-ship capacity grew again by 36 per cent in the 1990s. Then, in 2006, Maersk introduced a massive new vessel, the Emma Maersk, which could hold about 15,000 containers, almost 70 per cent more than any other vessel.

“Instead of this pattern of small increases in capacity over time, all of a sudden we had a quantum leap and that really set off an arms race,” Levinson said.

Today, the largest ships can hold as many as 24,000 containers — a standard 20-foot box can hold a pair of midsize SUVs or enough produce to fill one to two aisles in a grocery store.

The growth of the shipping industry and ship size has played a central role in creating the modern economy, helping to make China a manufacturing powerhouse and facilitating the rise of everything from e-commerce to retailers such as Ikea and Amazon. To the container lines, building bigger made sense: Larger ships allowed them to squeeze out savings on construction, fuel and staffing.



“Ultra Large Container Vessels (ULCV) are extremely efficient when it is about transporting large quantities of goods around the globe,” Tim Seifert, a spokesman for Hapag-Lloyd, a large shipping company, said in a statement. “We also doubt that it would make shipping safer or more environmentally friendly if there would be more- or less-efficient vessels on the oceans or in the canals.”

A.P. Moller-Maersk said it was premature to blame Ever Given’s size for what happened in the Suez. Ultralarge ships “have existed for many years and have sailed through the Suez Canal without issues,” company chief technical officer Palle Brodsgaard Laursen said in a statement Tuesday.

But the growth in ship size has come at a cost. It has effectively pitted port against port, canal against canal. To make way for bigger ships, for example, the Panama Canal expanded in 2016 at a cost of more than $US5 billion ($6.6 billion).

That set off a race among ports along the East Coast of the United States to attract the larger ships coming through the canal. Several ports, including those in Baltimore, Miami and Norfolk, Virginia, began dredging projects to deepen their harbours. The Port Authority of New York and New Jersey spearheaded a $US1.7 billion project to raise the Bayonne Bridge to accommodate mammoth ships laden with cargo from Asia and elsewhere.

The race to accommodate ever-larger ships also pushed ports and terminal operators to buy new equipment. This month, for example, the Port of Oakland, California, erected three 1600-tonne cranes that would, in the words of one port executive, allow it to “receive the biggest ships.”

But while ports incurred costs for accommodating larger ships, they didn’t reap all of the benefits, according to Jan Tiedemann, a senior analyst at Alphaliner.

“The savings are almost exclusively on the side of the carrier, so there was an argument that the carriers have been in the driving seat and have just pushed through with this big tonnage, while terminal operators, ports and, in some cases, the taxpayer, has footed the bill,” he said.

The New York Times

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