They customize their vehicles to go at speeds of up to 270 MPH every day. Today we're going to take a look at the fastest boats, starting with the fastest yacht, jet skiing that can reach 200 kilometers per hour and finishing with the fastest boat in the world or the fastest thing on the water. . Here we go. Top Fuel Hydros are incredible machines and use the same 8,000 horsepower, supercharged, nitro-burning, 500-cubic-inch Hemi engines that a Top Fuel Dragster and Funny Car do. Campbell drove the K7, adding almost 100 mph to his water speed record. It went from 178 mph to an incredible 276 mph. Unfortunately, Campbell's need for speed overpowered him when he died in an accident on January 4, 1967, while trying to set a new water speed record with the goal of getting over 300 miles per hour.