New technology uses good old-fashioned wind to power giant cargo vessels

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https://www.npr.org/2023/10/05/1200788439/wind-power-cargo-ships-carbon-emissions

By Scott Neuman, NPR.

Excerpt: 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. ...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.... See also New York Times article In Shipping, a Push to Slash Emissions by Harnessing the Wind.

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