What color light indicates distress when used as an emergency beacon?

A flashing red light is universally recognized as a distress signal in maritime practice. This form of signaling is an established part of international maritime conventions, specifically aimed at conveying an urgent need for assistance. The use of flashing red lights is effective because the color red is associated with danger and emergency situations, making it easily identifiable from a distance.

In emergency scenarios, the clarity and immediate recognition of a distress signal are crucial for mobilizing swift assistance. The flashing aspect adds urgency, indicating that the signal is not merely an alert but rather a call for help. Therefore, the flashing red light serves as a vital communication tool to others in the vicinity, facilitating rapid response and assistance on the water.

Other colors, like blue, white, or green, do not carry the same universal implications of distress. While they may have specific uses, they do not convey an emergency situation as effectively as the flashing red light does in maritime contexts.