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The return on investment for installing a kite sail was estimated to be about two-three years. [5] On her maiden voyage, MS Beluga Skysails saved an estimated 10–15% fuel, $1,000 to $1,500 per day, while the kite was in use. [6] Maartje Theadora, a large fishing trawler, was retrofitted with a kite rig in 2010. [7]
SkySails' kite propulsion from upper wind power is a traction use of high altitude wind power. ... the ship saved an estimated 10-15% fuel, $1,000 to $1,500 per day. [6]