The American Power Boat Association (APBA) is a New York membership owned corporation that was created in 1903 by an act of the New York legislature as a racing association for powerboats. It is the United States sanctioning authority for the Union Internationale Motonautique (UIM), the world governing body for powerboat racing. It is the sole governing body in the United States. The APBA sanctions races in a number of different categories including the Unlimited Hydroplanes, Inboard, Outboard Performance Craft, Stock Outboard, Modified Outboard, Pro Outboard, Outboard Drag, Offshore and Special Events classes. Each category comprises a number of different classes. There are also many smaller regional clubs, including South Shore Outboard Association, located in New England.