Vietnamese Builder Made a Fully Functional UFO Boat From Dirt, Cement, and Scrap MetalMost boat builds start with a hull blank, a workshop full of proper equipment, and a budget. Vietnamese creator Thánh Chế, known on YouTube as Mr. Ho, started with a dream, a pile of scrap, and the ambition to put a flying saucer on a river.The result is genuinely hard to believe until you watch it move.The whole project traces back to a vision Ho had while sleeping – a saucer-like vessel gliding across water. "I made my own flying saucer-like I saw it in my dream and running on the river was so much fun," he wrote on his YouTube in video captions.AdvertisementAdvertisementThe entire build took roughly a month.The Build Is as Creative as the Boat ItselfThe construction method is where things get genuinely clever. Rather than sourcing a pre-made mold, Ho sculpted a sand and cement form and used it to mold a fiberglass shell for both the upper and lower halves of the saucer. A custom rotating arm – fabricated from scrap metal – was mounted to a central post and used to pack the dirt mound into a symmetrical dome, then smooth an even coat of cement over it. Once the fiberglass cured over that surface, the temporary mold was chipped away and discarded. The technique is resourceful to the point of being kind of brilliant.The finished boat features remote-controlled gull-wing doors, LED lighting, solar panels, a waterproofed fiberglass hull, tinted acrylic windows, and a fully functional jet propulsion system.The engine – the same type found in a jet ski – sits beneath the rider's seat , drawing water through a bottom intake and expelling it through a rear nozzle to generate thrust. Steering is handled by a deflector bucket linked to a cable, which redirects the water jet rather than relying on a rudder.AdvertisementAdvertisementBecause the engine sits in the heart of the craft just below the driver's seat, the lower hull was built with a hollow oval form to house it.Inside, the cabin is compact by design.The pilot reclines rather than sits upright in the seat, reaching forward to a steering wheel that bears the word "YouTube" on its face. Soundproofing mats line the interior, an instrument panel with gauges and switches sits within reach, and the wiring is routed behind trim panels so the cockpit reads clean. For something built without CNC machines or factory tooling, the fit and finish is remarkable.The Maiden Voyage WorkedWhen Ho finally put the UFO jet boat to the test on the river, it sped across the water with the balance and directional stability that the design demanded. The saucer shape sits low on the surface, and the jet propulsion system – with no external propeller to worry about – allows for tight, smooth turns. At speed, the thing genuinely looks like something that shouldn't exist.AdvertisementAdvertisementThe build video has already pulled more than six-million views on YouTube , and it's easy to see why. There's something compelling about watching a person bypass every conventional shortcut and engineer each problem from first principles. A cement mold made from compacted dirt. Fiberglass laid by hand. A jet propulsion system wired and plumbed in a backyard workshop.Most people who have a wild idea for a boat build end up with a rendering on their phone and a half-finished hull in the garage. Ho ended up with a flying saucer on a river. That's a pretty good outcome for a dream.