What is a swivel in rigging?

In rigging, a swivel is a crucial component that allows for the rotational movement between two parts of a rigging system. This functionality is essential because it helps to prevent the twisting of slings or cables, which can occur during the lifting or moving of loads. When a load is lifted, various forces can create twisting motions; without a swivel, these forces can lead to tangling, stress on the rigging equipment, and potential failure of the system. The incorporation of a swivel ensures that the rigging remains organized and operates smoothly, allowing for safer and more efficient handling of loads.

The other options describe different rigging components or techniques, but they do not capture the unique role of a swivel in maintaining the integrity and performance of the rigging system.