The Box That Shrank the World

Before the container, loading a ship was the work of days. Cargo arrived in sacks, barrels, crates and bales, each handled by hand, counted, stacked and often stolen. A ship might spend as long in port as at sea. The cost of moving goods was dominated not by the voyage but by the handling at each end.

A trucker's idea

Malcom McLean, who owned a trucking company, reasoned that the trailer, not its contents, should be the unit that moved. In April 1956 his converted tanker, the Ideal-X, sailed from Port Newark to Houston with fifty-eight trailer bodies on its deck. The handling cost per ton fell by more than an order of magnitude compared with conventional loading.

The standard

A box that fit only McLean's ships would have been a company's advantage, not a revolution. The revolution came from standardization. Through the 1960s, under the International Organization for Standardization, the industry agreed on container dimensions, corner fittings and strength requirements. The twenty-foot and forty-foot boxes that resulted could move from a ship in Rotterdam to a train in Kansas to a truck in Denver without being opened.

What changed

Ports that had employed tens of thousands of longshoremen employed hundreds of crane operators. Cities whose waterfronts had been working docks saw them fall silent and then become real estate. Factories that had needed to be near their markets could be near cheap labor instead. The container did not create global supply chains by itself, but without it they would not have been possible at the scale that exists.

Why it is interesting

The container is a reminder that the most consequential technologies are sometimes the dullest: a steel box, a set of agreed dimensions and a fitting at each corner. The economic historian Marc Levinson, whose book The Box tells this story, argued that it reshaped the world economy as much as any invention of the twentieth century.