If a sailboat is underway in the fog, what sound signal should you hear?

When a sailboat is underway in foggy conditions, it is required to use specific sound signals to alert nearby vessels of its presence. The correct sound signal for a sailing vessel under these circumstances is one prolonged blast followed by two short blasts, repeated every two minutes. This signal indicates that the vessel is under way but not using its engine, which is an important distinction for other vessels navigating in reduced visibility.

The prolonged blast indicates that the vessel is signaling its presence, while the two short blasts signify that it is a sailing vessel. This combination makes it clear to other boats in the area what type of vessel they are dealing with, which is crucial for safe navigation in fog. The requirement for repetition every two minutes ensures that the signal is heard periodically, maintaining awareness of the sailboat’s location while the visibility is limited.

Other sound signals mentioned, such as continuously blowing a horn or other specific blast patterns, are designated for different types of vessels or situations, which is why they are not appropriate for a sailing vessel navigating in fog. Understanding these sound signaling rules is essential for safety on the water, particularly in reduced visibility conditions.