 Zha's approach uses big stationary cylinders, each about 75 feet high, that would be mounted to a ship's deck. The cylinders suck in air, then pressurize and eject it in a different direction to generate thrust. He says his research and prototypes suggest the technology could cut ships' fuel use by 20 to 50 percent. So he sees great potential in using wind power to propel a cleaner future for marine shipping. We are very excited and motivated.