When approaching a sound signal from another vessel, what should you do?

When approaching a sound signal from another vessel, the appropriate action is to change course and speed. This is essential because sound signals are typically used to communicate the presence and intentions of vessels, especially in situations where visibility is limited, such as in fog or heavy rain.

Changing your course and speed allows for safer navigation by creating more distance and reducing the chance of a collision. It helps you to properly respond to the other vessel's intentions, as sound signals can indicate that another vessel is either restricted in its ability to maneuver or is signaling its own navigation intentions. By altering your course and speed, you enhance situational awareness and ensure that both vessels can navigate safely without misunderstandings.

Maintaining your course and speed could lead to dangerous situations if the sound signal indicates an imminent risk of collision. Noting the position of the other vessel, while important, does not directly address the need for proactive navigation adjustments based on the sound signal. Ignoring the signal altogether is not advisable, as it shows a lack of awareness and could result in significant safety hazards.