A planing hull is a type of boat design that allows the vessel to rise and glide on top of the water at high speeds. This design reduces drag, enabling the boat to move faster and more efficiently. Planing hulls are commonly found in smaller boats, such as speedboats and fishing boats, where quick acceleration and maneuverability are important. When a planing hull reaches a certain speed, it lifts out of the water, creating a smaller surface area in contact with the water. This phenomenon is known as "planing." The shape of the hull is typically flat or slightly V-shaped, which helps it achieve this lift.