Question: 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?
Sentence (from "Hydroplane (boat)"): A hydroplane (or hydro, or "thunderboat") is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy.
Relevant evidence: Yes