What does the sound signal of one prolonged blast on a boat indicate?

A sound signal of one prolonged blast on a boat is used to indicate that the vessel is leaving a dock or berth. This signal is essential for maintaining safety on the water, as it alerts other boaters and nearby vessels of the boat’s intentions to depart. Such auditory signals are part of maritime communication protocols intended to prevent collisions and ensure clear understanding among operators in busy waterways.

For example, when a boat is preparing to leave its berth, other vessels nearby need to be aware of this movement to navigate safely around the departing boat. This practice is particularly important in congested areas or marinas where multiple boats are maneuvering.

In contrast, other options represent different scenarios that a sound signal would not typically indicate. For instance, being in distress usually requires a different signal, such as multiple short blasts or a series of sound signals. Similarly, anchoring involves specific sounds to indicate the maneuver, and reversing direction would require an entirely different series of signals to communicate effectively to those around. Understanding these nuances helps ensure safe navigation and communication on the water.