For rescue or rappelling, which type of rope is preferred?

For rescue or rappelling, low stretch rope is preferred because it minimizes the potential for dynamic forces during a fall. When a person falls while using rope, especially in rescue scenarios, too much stretch can lead to a phenomenon known as a "dynamic fall," which can exert excessive force on both the rope and the harness, potentially leading to injuries or equipment failure.

Low stretch rope provides a more controlled descent and allows for better handling, making it safer for both the rescuer and the victim. It also helps improve the stability of the system during rescue operations, as rescuers need reliable and predictable performance from their equipment to ensure safety.

In contrast, high stretch rope is designed for applications that require more elasticity, typically in climbing or sports where shock absorption is beneficial, but it is not suitable for rescue operations where stability and control are paramount. Medium stretch ropes can provide some advantages in certain situations, but they are not as reliable as low stretch ropes for rescue or rappelling purposes. Elastic ropes are primarily used in activities like bungee jumping, where the elasticity is needed for rebound; therefore, they are not suitable for the serious and controlled environment of rescue scenarios.