What should boaters carry as a precaution in case of a lost person?

Carrying a whistle as a precaution in case of a lost person is crucial because it is a simple yet effective signaling device that can be used to attract attention. Whistles are lightweight, easy to carry, and can produce a loud sound that travels much farther than a person's voice. They can help rescuers locate an individual who may be in distress or lost in a wooded or remote area.

In emergency situations, sound can carry better than visual signals, especially in environments where visibility may be low. A whistle can be used continuously without tiring the person, allowing them to signal for help over an extended period. This makes it a practical choice for boaters who may find themselves in challenging situations on or near water.

While other options such as a GPS device, a flare gun, or a mapping tool have their own benefits and may be useful in different contexts, they either require more technical know-how, may not be as effective in immediate signaling, or could be less accessible during a sudden emergency. Therefore, a whistle stands out as a vital tool for signaling and increasing the chances of being found quickly.