There are about 800,000 miles of internet cables that traverse the Earth’s ocean floors. These thin underwater cables carry the world’s data and are essential for governments, banks, corporations, and, well, the entire world to function. In this fantastic Verge feature, Josh Dzieza goes inside the subsea cable maintenance industry and highlights the crucial yet invisible work of highly specialized engineers on aging ships that keeps modern civilization from collapsing.
Once people are in, they tend to stay. For some, it’s the adventure — repairing cables in the churning currents of the Congo Canyon, enduring hull-denting North Atlantic storms. Others find a sense of purpose in maintaining the infrastructure on which society depends, even if most people’s response when they hear about their job is, But isn’t the internet all satellites by now? The sheer scale of the work can be thrilling, too. People will sometimes note that these are the largest construction projects humanity has ever built or sum up a decades-long resume by saying they’ve laid enough cable to circle the planet six times.
The world is in the midst of a cable boom, with multiple new transoceanic lines announced every year. But there is growing concern that the industry responsible for maintaining these cables is running perilously lean. There are 77 cable ships in the world, according to data supplied by SubTel Forum, but most are focused on the more profitable work of laying new systems. Only 22 are designated for repair, and it’s an aging and eclectic fleet. Often, maintenance is their second act. Some, like Alcatel’s Ile de Molene, are converted tugs. Others, like Global Marine’s Wave Sentinel, were once ferries. Global Marine recently told Data Centre Dynamics that it’s trying to extend the life of its ships to 40 years, citing a lack of money. One out of 4 repair ships have already passed that milestone. The design life for bulk carriers and oil tankers, by contrast, is 20 years.
But perhaps a greater threat to the industry’s long-term survival is that the people, like the ships, are getting old. In a profession learned almost entirely on the job, people take longer to train than ships to build.
The lifestyle can be an obstacle. A career in subsea means enduring long stretches far from home, unpredictable schedules, and ironically, very poor internet.
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