Sport boat impellers are mechanical devices that are used to generate flow in sport boats, which are small, agile watercraft that are designed for speed and maneuverability. They consist of a series of vanes or blades arranged in a circular pattern around a central hub. As the impeller rotates, it draws in water from the surrounding area and accelerates it outwards towards the discharge side of the impeller.

The shape and design of sport boat impellers can vary depending on the specific application and the desired flow characteristics. Some common types of sport boat impellers include radial flow impellers, which generate a radial flow pattern; mixed flow impellers, which generate both radial and axial flow; and axial flow impellers, which generate an axial flow pattern.

The efficiency of a sport boat impeller is typically influenced by factors such as the size and shape of the impeller, the rotational speed of the impeller, and the viscosity and density of the water being pumped. In general, sport boat impellers are designed to be as efficient as possible in order to minimize energy consumption and maximize performance.

Sport boat impellers are typically powered by an internal combustion engine, which drives the impeller and generates the flow needed to propel the sport boat through the water. The sport boat's jet nozzle, which is a narrow, pointed opening located at the rear of the boat, is used to direct the water flow and create the thrust needed to move the boat through the water.