Powered by a hydrogen/fuel cell system, Sinot's Aqua concept offers superyacht luxury and supreme earth-friendliness. Its system uses liquified hydrogen, which is converted into electricity via PEM fuel cells with water as the only by-product. The energy is then transmitted to the ship's switchboards, where it is used for propulsion, services, and buffered by large batteries for later use. The electric propulsion system makes the vessel very quiet while allowing a range of 3750 nautical miles at a speed of 19.5 mph. It's nearly 400 feet long, bow to stern, and allows for a spacious, beam-wide owner's pavilion on the upper deck, VIP staterooms on the beach deck near the waterline, an expansive exercise and wellness area, and all the outdoor amenities you'd expect, including an infinity pool, sun pads, and al fresco dining areas.