Cargo ships equipped with massive rigid sails called WindWings could save a substantial amount of fuel, considering how much of the world's goods are transported by sea.
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.
In one recent trial, the 751-foot bulk carrier Pyxis Ocean operated by Cargill was retrofitted with two rigid sails, known as WindWings, inspired by thoseThe articulated fiberglass and metal wings, which stand 123 feet tall, use the force of the wind to create lift and move the ship forward. The wings can be folded on deck in case of unsuitable wind or heavy weather and while in port, where they would interfere with loading and unloading operations.
Before departing for Brazil, the ship even sailed briefly without the engine."We pulled the anchor up, we put the wings up, turned them into their flying shape, and we cruised our way off berth," he says."The crew were dumbfounded." With so many overlapping interests in the shipping industry, simply getting agreement to try a system such as WindWings is no small matter, according to Jan Dieleman, president of Cargill Ocean Transportation.
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