What does the hand signal with either hand palm down on the crown of the head require?

The hand signal with either hand palm down on the crown of the head is a clear and specific signal indicating the need to deploy a personal flotation device. This signal is often used by surface rescue swimmers to communicate that a situation has arisen where buoyancy support is necessary for the safety and effectiveness of the rescue operation. The swimmer may need the additional flotation assistance to manage the situation, either for themselves or for a victim, to ensure they can maintain safety while carrying out rescue efforts.

Deploying a personal flotation device is crucial in rescue scenarios, especially in rough waters or when the swimmer may be fatigued. It enhances the swimmer's ability to remain buoyant and supports their physical capabilities during the rescue. Understanding and correctly interpreting this hand signal can be vital in ensuring prompt and effective responses in critical situations where timing and safety are paramount.