What is the term for a rope rescue mechanical advantage system that is neither simple nor compound?

A mechanical advantage system in rope rescue is designed to make the lifting or lowering of loads easier by using ropes and pulleys in various configurations. A system that is classified as neither simple nor compound typically involves a greater level of complexity, incorporating elements such as multiple pulleys or specialized equipment that create a unique setup tailored for specific rescue scenarios.

The term "complex system" aptly describes a system that has more intricate arrangements or technologies than what would be found in a simple (which might consist of just one pulley) or compound system (which typically uses two or more pulleys together). In a complex system, the interplay between additional components might augment the mechanical advantage or provide enhanced control and safety during a rescue operation.

Understanding these various terms is crucial for rescuers, as choosing the right system can greatly affect the efficiency and safety of a rescue mission. The knowledge of system types prepares responders to adapt their strategies to the specific challenges presented in different confined space rescue situations.