The American Power Boat Association  sanctions a race in which category, which has a hull shape that allows the boat to be supported by planing forces?
American Power Boat Association:  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.
i don't know