New Technology uses Good Old-Fashioned Wind to Power Giant Cargo Vessels
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By npr.org.
Well over a century after the Age of Sail gave way to coal- and oil-burning ships, climate change concerns are prompting a new look at an old technology that could once again harness wind to propel commercial cargo ships — this time with the goal of reducing greenhouse gas emissions.
Imagine what looks like Boeing 747 wings with movable flaps, set vertically on a ship’s deck. The vessel cruises under minimum power from its giant engine as computerized sensors adjust the fiberglass wings to take advantage of the wind’s speed and direction. This wind-assisted propulsion saves a substantial amount of fuel and reduces the carbon belching from the ship’s stack. Many experts think the idea has the potential to navigate the notoriously dirty shipping industry toward a greener future.
“Shipping is kind of unique,” says Gavin Allwright, secretary-general of the International Windship Association (IWSA), a not-for-profit trade organization that advocates for wind propulsion in commercial shipping. From antiquity, ships used clean and free wind energy, “then we carbonized and now we’re going back to zero carbon.”
At least that’s the hope.
The shipping industry could save fuel and cut down on emissions
About 90% of the world’s goods — everything from soybeans to sneakers — are transported by sea. The tens of thousands of ships used to get these goods to global markets account for an estimated 3% of the world’s carbon emissions each year, a figure that exceeds Japan’s annual emissions. Left unchecked, the shipping industry’s greenhouse gas emissions are expected to grow 50% by 2050.
Although commercial shipping wasn’t included in the 2015 Paris Agreement, there’s a huge economic incentive for the industry to decarbonize. The European Union’s Emissions Trading System will cover the maritime industry beginning next year, meaning shippers will be forced to pay for their carbon emissions.
Read More at npr.org.
