Are sound signals only used in fog conditions for navigational purposes?

The statement that sound signals are only used in fog conditions for navigational purposes is not accurate. Sound signals have a broader application beyond just foggy weather; they serve important functions in various visibility conditions to communicate a vessel's intentions or actions to other vessels.

In addition to situations with reduced visibility like fog, sound signals are used as part of regular navigational practices to enhance safety. For instance, vessels may use sound signals to indicate maneuvering intentions, such as when overtaking another vessel or when navigating through narrow channels. Moreover, these signals are also essential in emergencies, when clear communication is critical to prevent collisions or ensure safety.

Understanding the full scope of sound signal usage helps mariners navigate safely and effectively, emphasizing the importance of auditory communication in marine environments regardless of visibility. This comprehensive understanding is what makes the chosen response correct.