Crossing an ocean on a sailing yacht is usually thought of as a matter of canvas, wind, and patience. On Jeff Bezos’ towering three-mast vessel Koru, the picture is very different. When the yacht makes the 4,067-mile journey from Fort Lauderdale to Ibiza, it does so while quietly generating an extraordinary amount of energy. The hybrid propulsion system turns the motion of the yacht under sail into power, spinning its propellers in reverse so they act like underwater windmills feeding a massive battery bank reports The Times.
Luxurylaunches crunched some numbers and over the course of a trip from Fort Lauderdale to the Mediterranean, the Koru produces about 28 megawatt hours of electricity. That is enough to light up roughly 900 American homes for a single day.
The scale becomes even more impressive when you compare it to everyday power consumption. That 28 megawatt hours translates to about 30 homes running for a month or just under three homes running for an entire year. The system fills a five megawatt hour battery more than five times during the crossing.
For context, generating the same energy with diesel alone would require between 7,200 and 9,000 liters of fuel, equal to about 1,900 to 2,380 US gallons. Burning that much fuel produces close to 20 to 24 metric tons of carbon dioxide. By relying on sails and regeneration, the Koru avoids all of that.
The yacht is a remarkable fusion of old world sailing and modern energy management. At 417 feet long, Koru is one of the largest sailing vessels in the world. Its three towering masts carry enough canvas to drive the ship at around 14 knots for much of the passage.
About seventy percent of the trip to Ibiza can be done purely under sail, which is when the hybrid system does its best work. The electrical machines on the shafts switch into generator mode, powering a DC bus that feeds the battery bank. From there the electricity is distributed to every corner of the yacht.
What makes this important is that the stored energy covers what engineers call the hotel load. Air conditioning, lighting, entertainment, and galley systems are all kept running without needing diesel generators to hum away in the background. By contrast, Roman Abramovich’s Eclipse superyacht is known to burn roughly a ton of diesel every day just to keep the air conditioning running.
At anchor or in quiet coastal waters, the Koru can operate silently on batteries, sparing its guests the noise and fumes that usually accompany large yachts. This backbone of multi megawatt hour batteries, hydrogeneration, and intelligent energy management is now becoming standard practice in the very top tier of hybrid superyachts.
For Bezos the appeal is clear. The Koru allows him to cross oceans, enjoy the Mediterranean, and live aboard with every imaginable comfort, all while knowing that much of the power keeping the lights on and the air cool is generated freely as the yacht sails through the sea. It is a demonstration that luxury and sustainability can share the same deck.
