What is the objective of using a rescue tube?

The objective of using a rescue tube is primarily to provide flotation for the individual in need of assistance, which aligns with the broader functions of lifeguarding equipment. While having a protective barrier is important during a rescue, the key purpose of the rescue tube is to assist the lifeguard in safely reaching and supporting a distressed swimmer. The tube offers flotation, allowing the lifeguard to maintain their own buoyancy while extending the tube to the victim or pulling them back to safety.

In this context, while acting as a protective barrier (as suggested in the selected answer) is somewhat relevant, it does not fully encapsulate the primary function of the rescue tube. The rescue tube is fundamentally designed to enhance flotation for both the rescuer and the victim, making it a crucial tool for effective rescues. Thus, the correct understanding is that the rescue tube's main use is for flotation, reinforcing its essential role in lifeguarding scenarios.