Base jumping grew by parachute jumping. BASE jumps are usually very much lower than heights jumps, and a BASE jump will be held in the vicinity of the building as the platform directly. Because BASE jumps generally bring rated flight speeds slower than typical jumps because of the limited height, BASE jumpers rarely reaches terminal velocity (the speed achieved after twelve seconds acceleration). Because higher rated flight speeds allow jumper aerodynamic more control over their bodies, as well as positive and quick parachute openings, the longer the delay, the better.
Skydivers use of air power to stabilize their position, so that the parachute deployment to clean. BASE jumpers fall at lower speeds, less aerodynamic control, and can tumble. The position of the body at the moment of jumping, the stability of the aircraft in the first few seconds, before sufficient air speed has to provide aerodynamic stability. With low BASE jumps, parachute deployment will take place in this early phase of the flight, so that when a bad starting leads into a laundry dryer, the jumper may not be able to correct before the opening. When the parachute is in operation, while the jumper is drumming, there is a high risk of entanglement or malfunctions. The bridge may also not be in the right direction. Such a position-opening is not a problem in parachute jumping, but from opening section that results in the object strike has led to severe injuries and deaths in BASE jumping.