Surf Dog Championship 2013, Coronado Bay Resort, California, United States

Two major subdivisions within stand-up surfing are longboarding and shortboarding, reflecting differences in surfboard design including surfboard length, and riding style.
In tow-in surfing (most ten, but not exclusively, associated with big wave surfing), a motorized water vehicle, such as a personal watercraft tows the surfer into the wave front, helping the surfer match a large wave's higher speed, a speed that is generally, but not exclusively a speed that a self-propelled surfer can not match.
Surfing-related sports such as paddleboarding and sea kayaking do not require waves, and other derivative sports such as kitesurfing and windsurfing rely primarily on wind for power, yet all these platforms may also be used to ride waves.
Recently with the use V-drive boats, wake surfing, riding the boat wake has emerged.