StaticLine As BASE jumping is for the people who are as you say dare devils many try to jump from rather low heights as this is harder and more dangerous. For jumps 300 feet or lower, BASE jumpers have almost no time at all to freefall and deploy a chute. So that jumps from this height can be completed safely BASE jumpers must use a static line to deploy the chute automatically A static line is a fixed cord attached to a large, stable object. It is used for safety in construction, low jumps and training in parachuting. The static line runs from the jumpers pack to the object. During the jump, this line pulls the main chute open, and then separates from the pack (similar to the rockets separating from a plane). Skydivers don’t have to worry about object proximity. They only have to worry about hitting the ground, not the side of a building or cliff. But most BASE jumping fatalities are due to object impacts, rather than freefalling to the ground. The need for fast parachute deployments compounds the problem – these deployments can send the jumper off into unintended directions, such as straight into a granite wall. Jumpers call this an “off-heading opening”. As the use of a static line is needed though dangerous in low height jumps, BASE jumpers solve the problem of “off-heading opening” by using a smaller ram-air parachute, one with seven air cells instead of nine.
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