Sometimes it takes an energy crisis to make us realize the value of old technology. As oil prices soar, tall wind-powered ships are looking like an increasingly viable alternative.

The first commercial cargo of French wine to be transported by sailboat in the modern era is due to arrive in Dublin this week after a six-day trip. The 108 year-old British boat, chartered by French shipping company Compagnie de Transport Maritime a la Voile (CMTV), is carrying 30,000 bottles of wine.

Though the ship travels at a top speed of eight knots— half the speed of a modern cargo vessel—it is completely pollution-free. The 50,000 other merchant ships traveling the world emit 800 million tons of carbon dioxide each year.

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