The hydrofoil is characterized by running on the interface between air and seawater, and overcoming the resistance of water as much as possible. The first inventor who thought of hydrofoil and studied it was/kloc-a French priest named Lamisse in the middle of the 9th century. Delambo was a Frenchman of Russian descent, and he began to power his "seaplane" with the gasoline engine he had just invented at that time. In 1990s, 19, he tried a model hydrofoil on the Seine River, but it could not lift its head from the water. Italian airship designer Follanyi Ni built a small hydrofoil in 1905, and explained the scientific and technical principles of hydrofoil in the patent specification. 19 1 1 performed the latest model hydrofoil for visiting American VIP Bell in Lake Marjory. According to Franyi's patent, Bell began to build his own hydrofoil. This hydrofoil set a sailing record of 1 14.3 kilometers per hour in 19 18. These hydrofoils are supported by hydrofoils in potential water. The thin hydrofoil at the bottom of the ship was completely submerged when the ship was moored. When the ship starts to move, the water flow generates lift through the curved hydrofoil. The faster the ship goes, the greater the lift. When the hydrofoil rises in the water, it pushes the hull completely out of the water. Because of the elimination of obstacles, the speed of the ship is greatly improved and the driving is more stable. During World War II, some German inventors improved hydrofoils. After the war, the British organist Hooke made further improvements. Italy began to build a large number of hydrofoils in the 1950s, and the United States and the Soviet Union also designed their own large-scale military and passenger hydrofoils. There are hundreds of such ships on Soviet shipping lines, the largest of which can carry 300 passengers at a speed of 40 knots. The US Navy has successfully tested several hydrofoils in stormy waters. One of them, Pingjing 1968, built by Lockheed, was the largest hydrofoil in the world at that time, with a speed of over 40 knots on calm water.