It is a plan as crazy as the situation is desperate — towing an iceberg from Antarctica to Cape Town to supply fresh water to a city in the grip of drought. Earlier in 2018, Cape Town came within weeks of shutting off all its taps and forcing residents to queue for water rations at public standpipes. The cut-off was narrowly averted as people scrambled to reduce their water usage and Autumn rains saved the day. But the threat is expected to return to the city again in 2019 and beyond. "The idea sounds crazy," admits maverick salvage expert Nick Sloane, the brains behind the tow-an-iceberg scheme. "But if you look at the fine details, it is not so crazy." Sloane suggests wrapping the iceberg in a textile insulation skirt to stop it melting and using a supertanker and two tugboats to drag it 2,000km towards Cape Town using prevailing ocean currents. The iceberg, carefully selected by drones and radiography scans, would be about 1km in length, 500m across and up to 250m deep, with a fl...

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