What is the primary function of a short whistle blast (one short whistle)?

The primary function of a short whistle blast is to gain the attention of guests. Lifeguards often use this signal during pool operations or while supervising aquatic activities to communicate effectively with the people in their area. A single short whistle blast cuts through ambient noise and alerts guests to listen for further instructions or information. This is crucial for maintaining safety and ensuring that everyone is aware of lifeguard commands or potential hazards.

The choice to signal a major emergency is typically reserved for a more urgent and clear signal, such as multiple or longer blasts. Getting the attention of lifeguards may involve different signaling methods depending on the situation and location, while indicating a change in activity can often be communicated through verbal instructions or a different pattern of whistles that may involve longer or multiple blasts. Thus, the single short whistle is specifically designed for obtaining guests' attention in a straightforward manner.