Economies of scale made steel
The economics of very big ships Aboard one of the world's largest container ships, moving almost imperceptibly through the seas off Vietnam, it's easy to appreciate the economies of scale that allow a T-shirt made in China to be sent to the Netherlands for just 2.5 cents.The Eleonora Maersk and the other seven ships in her class are among the biggest ever built: almost 400m long, or the length of four football pitches, and another half-pitch across. The ship can carry 7,500 or so 40-foot containers, each of which can hold 70,000 T-shirts. On the voyage your correspondent took, the Eleonora was carrying Europe's New Year celebrations: 1,850 tonnes of fireworks, including 30 tonnes of gunpowder.To move all this cargo from China to Europe in just over three weeks, the Eleonora boasts the largest internal-combustion engine ever built, as powerful as 1,000 family cars. This engine turns the longest propeller shaft (130m) ever made, at the end of which is the largest propeller, at 130 tonnes. Yet the ship is so automated that it requires a mere 13 people to crew it. Reassuringly, most captains prefer to take a few more.Maersk Lines, the world's biggest container-shipping company and owner of ...
Read more