Crazy idea to capture an iceberg to fix South Africa's drought

2021-02-21 PandaGuides

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Nicholas Sloane doesn’t mind discomfort. The 56-year-old South African marine-salvage master has survived two helicopter crashes and spent thousands of hours aboard ships that are burning, sinking, breaking apart, or leaking oil, chemicals, or cargo into the ocean. Often, he gets calls in the middle of the night asking him to pack his bags and fly immediately to a disaster zone across the world, anywhere from Yemen to Papua New Guinea. Twice, he’s fought off armed pirates using water cannons, sound cannons, and strobe lights.

Usually, Sloane rooms on location, bunking in makeshift beds aboard singed or waterlogged ships he’s working to rescue. He once lived for three months with a family on Tristan da Cunha, the world’s most remote inhabited archipelago, orchestrating the logistics of catching and washing thousands of rockhopper penguins drenched in bunker fuel from a shipwreck. More recently, he spent 2½ years overseeing the almost $1 billion refloating of the Costa Concordia, the infamous Italian cruise ship that capsized inside a marine sanctuary off the coast of Tuscany, killing 32 passengers.

But at some point early last year, Sloane really wanted to take a bath and couldn’t. He was home with his family in Cape Town, which had recently declared an emergency: After three years of severe drought, the city of 4 million was at risk of becoming one of the first in the world to run out of municipal water. To forestall a shutoff, each household was permitted only 50 liters—about 13 gallons—per day per person to cover drinking, cooking, washing, and showers. 「That’s enough to fill less than half a tub,」 says Sloane, a soft-spoken man with graying hair, ruddy skin, and a deep crease between his green eyes. 「My wife used to take a bath every night and a shower every morning. She told me, 『You』d better do something.』 」

More than a year later, disaster has been averted, thanks to badly needed rainfall and drastic reduction in water use. But conditions in Cape Town remain far from normal. The daily-use limit has been raised, but only to 70 liters, and people still take speed showers, collecting the runoff to use for toilet flushing. Some hotels have removed stoppers from bathtubs to keep profligate tourists in line. And farmers throughout the country are reeling. More than 30,000 seasonal jobs have been lost in the Western Cape, and crop production has declined by about 20%. During the height of the drought, hundreds of farmers in the Northern Cape killed off most of their livestock rather than truck in costly feed. 

Sloane still hasn’t taken that bath at home, and he isn’t optimistic about Cape Town’s future. 「We』ll never get back to the days where water is flowing all over the Cape,」 he says, pointing out that the city’s population has grown almost 40% in the last 20 years. 「If the taps run dry, the first day people will be standing in lines at watering points throughout the city. The second day, if you don’t get your water, well, people are killed for that.」

Sloane, master marine salvager and would-be iceberg transporter.

That’s why Sloane is working on a solution that might sound absurd. Making use of his unusual skill set, he plans to harness and tow an enormous Antarctic iceberg to South Africa and convert it into municipal water. 「To make it economically feasible, the iceberg will have to be big,」 Sloane says. Ideally, it would measure about 1,000 meters (3,281 feet) long, 500 meters wide, and 250 meters deep, and weigh 125 million tons. 「That would supply about 20% of Cape Town’s water needs for a year.」

Sloane has already assembled a team of glaciologists, oceanographers, and engineers. He’s also secured a group of financiers to fund the pioneer tow, which he calls the Southern Ice Project. The expected cost is more than $200 million, much of it to be put up by two South African banks and Water Vision AG, a Swiss water technology and infrastructure company.

Now Sloane’s team needs an agreement with South Africa to buy the Antarctic water, if the plan succeeds. His team could charter the necessary ships and prepare all required materials within six months, though the mission will need to take place in November or December, when the Antarctic climate is somewhat less ferocious. 「We’re taking on all the risk,」 he says. 「We’re ready to go.」

Harvesting icebergs isn’t a new idea. In the mid-1800s, breweries in Chile towed small ones, sometimes outfitted with sails, from Laguna San Rafael to Valparaiso, where they were used for refrigeration. In the late 1940s, John Isaacs of the Scripps Institution of Oceanography began exploring more fantastical plans, such as transporting an 8 billion-ton iceberg to San Diego to mitigate California droughts. (Icebergs of the size Isaacs had in mind—20 miles long, 3,000 feet wide, and 1,000 feet deep—are extremely rare.) In the 』60s oil companies began using thick ropes to wrangle and redirect much smaller Arctic icebergs before they collided with rigs, a practice that’s now common. If conditions are too rough, or a berg too big, the rigs sometimes need to be moved instead.

In the 』70s, the U.S. Army and the Rand Corp. both looked into using Antarctic ice as a source of fresh water. At about the same time, Prince Mohammed al-Faisal began pouring funds into polar research, in hopes that his assembled team of international glaciologists and engineers would find a way to alter the drift of icebergs, potentially bringing them as far as Western Australia. Prince Mohammed even sponsored the First International Conference on Iceberg Utilization for Fresh Water Production, Weather Modification and Other Applications in, of all places, Ames, Iowa, in 1977 and had a miniberg weighing 4,800 pounds trucked in from Alaska. 「The people of Ames have seen princes before, but it has been many millenniums since an iceberg has visited these parts,」 wrote the New York Times, delighting in the spectacle. The paper also described some of the more outlandish suggestions floated by speakers, such as outfitting icebergs with nuclear-powered paddle wheels that would allow them to 「be propelled as self-contained units.」 One skeptical delegate lamented: 「There isn’t much money around these days for Arctic and Antarctic research, so they』ve flocked around like flies to the honey pot. It’s embarrassing.」

Eventually, Prince Mohammed stopped funding polar research, but attempts to access iceberg water continued. Today, in Newfoundland, a handful of small Canadian companies, including one called Iceberg Vodka, hire so-called iceberg cowboys, who use chainsaws, articulated claws, and even rifles to take off chunks of passing Arctic bergs, so they can be netted, melted, and used to distill premium alcohol. (Icebergs form from compacted snow, and their water is uncommonly pure.) This spring thieves made off with 8,000 gallons of Iceberg Vodka’s water, siphoning it from a large tank. 「Our suspicion is that whoever took it thought it was vodka,」 said Chief Executive Officer David Meyers. Berg Water, another Newfoundland company, sells 12-packs of 「15,000-year-old」 water for as much as $180.

Meanwhile, more than 100,000 Antarctic icebergs melt into the ocean each year. They range from merely large to country-size (the biggest seen recently was the size of Jamaica), and by some calculations they contain more than the annual global consumption of fresh water. Rather than let that water slip away, several groups are vying for berg-towing funds and know-how. The European Union in 2010 received a proposal to pull icebergs from Newfoundland to the Canary Islands, which have long been short on fresh water; and the United Arab Emirates plans to test its prospects of importing icebergs by bringing one from the Antarctic to Australia or Cape Town by late 2020. In Germany, a company called Polewater Gmbh says it’s spent $2.8 million over the past six years hiring experts to complete a strategy for getting Antarctic iceberg water to drought-stricken areas, with an emphasis on minimizing environmental impact. Having won the blessing of some Greenpeace officials, Polewater says it needs $67 million to build the company over the next three years.

But when it comes to towing a 100 million-ton iceberg through the notoriously rough Antarctic Ocean, where swells regularly reach 15 meters, investors are betting on Sloane. 「I was the greatest skeptic around,」 says Bert Mulder, chief operating officer of Water Vision, Sloane’s Swiss backer. 「Then I started to listen to Nick Sloane. If anybody can do it, it’s him. I truly believe that.」

Sloane was born in Northern Rhodesia, now Zambia, and grew up exploring rivers and lakes. 「There was no TV, only basic radio, so the outdoors was your life,」 he says. At about 10 he moved with his family to a town outside Durban, South Africa, where he began sailing and found he loved ocean racing in stormy weather, particularly because daring counted for more than tactics alone. After high school, he completed his national service with the merchant marine, then spent 10 years becoming a master mariner, running tankers and cargo ships and towing oil rigs. From there, he stumbled into the high-intensity work of marine salvage, where successful teams are rewarded with payouts of 7.5% to 10% of the distressed ship’s assessed value, a fee that often reaches millions of dollars.

Today, Sloane spends roughly six months of the year in Cape Town with his wife and three kids. But he’s always on call for his employer, Resolve Marine Group, a global salvage company based in Florida. From one day to the next, he might find himself rappelling from a helicopter onto a burning supertanker or using his connections and organizational skills to oversee the complicated logistics of cleaning up a toxic spill in remote waters.

Traveling 「slower than the slowest thing on Earth,」 as Sloane puts it, the journey will take an estimated 80 to 90 days. The anticipated melt rate is about 0.05 meters to 0.1 meters per day from each side and the base, which would result in a reduction in size of about 8% by arrival—but certain factors, most notably storms, could increase erosion at the water line. The final destination will be northwest of Cape Town, where the iceberg will run aground and sit amid the fairly cold, slow-moving Benguela Current, about 25 miles from land. There, Sloane’s team will hold the berg in place with a 1,000-ton mooring system, and, like the French artist Christo, wrap the entire underwater portion in a giant, 800-ton geotextile skirt designed to reduce wave impact and inhibit further melting. The skirt, expected to cost roughly $22 million, will let fresh water pass through, creating a buffer of cold water, while keeping salt water out. As the iceberg gets smaller, it will be moved closer to shore.

Sloane has put more than $100,000 of his own money into the Southern Ice Project. 「If you』d asked me 10 years ago, I probably would have said this was crazy, but now the time is right,」 he says, sitting in the lounge at the InterContinental Paris Le Grand Hotel, where he’s staying. Cape Town, he points out, is by far the most conveniently located city for a pioneer tow, given its relative proximity to Antarctica and the path of the Benguela Current, but he believes icebergs may eventually be pulled to Perth, Australia, and Santiago, Chile. 「And if you can get it to Cape Town, you can get it to Namibia and maybe as far as Angola.」

For now, Sloane is focused entirely on his continent, where cities and towns across several nations are running dry. 「I promise you, the water situation in some parts of Africa is getting worse all the time. It’s certainly not getting better,」 he says. 「Twenty or 30 years from now, I think towing icebergs will be a regular thing.」

Source: https://www.bloomberg.com

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