HughPickens.com writes: Alan Minter writes at Bloomberg that between 1955 and 1975, the average volume of a container ship doubled -- and then doubled again over each of the next two decades. The logic behind building such giants was once unimpeachable: Globalization seemed like an unstoppable force, and those who could exploit economies of scale could reap outsized profits. But it is looking more and more like the economies of scale for mega-ships are not worth the risk. The quarter-mile-long Benjamin Franklin recently became the largest cargo ship ever to dock at a U.S. port and five more mega-vessels are supposed to follow. But today's largest container vessels can cost $200 million and carry many thousands of containers -- potentially creating $1 billion in concentrated, floating risk that can only dock at a handful of the world's biggest ports. Mega-ships make prime targets for cyberattacks and terrorism, suffer from a dearth of qualified personnel to operate them, and are subject to huge insurance premiums. But the biggest costs associated with these floating behemoths are on land -- at the ports that are scrambling to accommodate them. New cranes, taller bridges, environmentally perilous dredging, and even wholesale reconfiguration of container yards are just some of the costly disruptions that might be needed to receive a Benjamin Franklin and service it efficiently. Under such circumstances, you'd think that ship owners would start to steer clear of big boats. But, fearful of falling behind the competition and hoping to put smaller operators out of business, they're actually doing the opposite. Global capacity will increase by 4.5 percent this year. "Sooner or later, even the biggest operators will have to accept that the era of super-sized shipping has begun to list," concludes Minter. "With global growth and trade still sluggish, and the benefits of sailing and docking big boats diminishing with each new generation, ship owners are belatedly realizing that bigger isn't better."