While traversing the sea in a superyacht is a singular experience, the excessive amount of fuel consumed by these thirsty vessels can put a damper on the festivities—and the owner’s bank account. But the recent explosion in hybrid yachts, which employ both electric motors and traditional diesel engines for propulsion, is helping to ease the pinch at the pump while reducing harmful carbon emissions. The following are 10 of RobbReport.com’s favorite hybrid superyachts.