Wind power sailing across the sea was a feature of international trade for centuries. Then along came steam, and then marine diesel engines. These freed the industry from relying on capricious winds blowing ships into dangerous situations. All was good in the industry for a while. Now the carbon debate has raised the possibility of cargo ships with wind power sailing across the sea again.
Is Wind Power Sailing Across the Sea Again a Dream
No, not at all: A ship’s propeller pushes in the opposite direction to the vessel’s movement. Whereas wind power pushes it in the same direction so the two are more in harmony. The Lloyds shipping register believes hybrid cargo ships could save 50% of fuel costs.
We quickly add, “And reduce their carbon emissions too.” Lest we forget diesel produced 2.2% of global emissions in 2012. Moreover, this will increase by up to 250% by 2050 if we do nothing about it. Diesel shipping is in double jeopardy. Vessel numbers are increasing, while other contributors are doing something to reduce their own emissions.
Fair Enough: What Will Some of These New Ships Look Like
Wind power sailing across the sea may adopt a variety of forms. One option envisages forward-facing sails on masts providing 60% of thrust. Solar ships are another alternative. In this model, solar panels on the sails provide electric assist to hybrid diesel engines.
Other, more ambitious ideas have ships wind-sailing behind huge kites in strong winds. It becomes clear the possibilities of wind power sailing across the sea are limited only by our creativity. Wind-sailing ships are not a figment of our imagination at all.
We can’t help thinking of intrepid Viking ships wind power-sailing across the oceans with billowing sails before them. Are we entitled to wonder why it took so long to return to this abundant form of energy?
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Preview Image: Tall Ship at Sea
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