Best of the Best: Breakthrough The largest yacht by volume ever built in the Netherlands, the 390-foot Breakthrough justifies its name. Feadship spent five years researching, designing, and constructing the world’s first hydrogen-fuel-cell superyacht. It involved entirely rethinking the interior to accommodate 4.4 tons of liquid hydrogen—which required 10 times more space than what’s needed for diesel fuel and must be stored in cryogenic tanks at -423 degrees Fahrenheit—to generate emissions-free energy. This technical leap combines 16 fuel cells, lithium batteries, two electric motors, and diesel generators to meet Breakthrough’s substantial propulsion and hotel needs. It will also allow the behemoth to cruise on fuel cells for short periods. Its heat-recovery system warms the pool, Jacuzzi, steam room, and floors and even preheats the engines. The luxe interior features elegant textured leather, marble, and rattan. The owner’s deck includes two en suite bedrooms, a gym, two offices, and a living room, while a..
