What is the primary purpose of a tag line in rigging?

The primary purpose of a tag line in rigging is to control the load during lifting and moving operations. Tag lines are used to help guide and manage the load, ensuring that it remains stable and does not swing out of control while being lifted or moved. By using a tag line, riggers can maintain better control over the load's orientation and position, making the operation safer for both the crew and the equipment involved.

Other functions, such as securing the load during transport or marking the load for identification, do not accurately capture the essential role that a tag line plays in rigging. The focus of a tag line is to facilitate the safe movement and adjustment of loads, rather than adjusting height or providing identification. This control aspect is critical in preventing accidents that can occur due to unexpected load movement.