In a scenario where two power vessels are approaching head-on, what should they use to communicate intentions?

In situations where two power vessels are approaching each other head-on, the use of sound signals is the most appropriate method for communicating intentions. These signals are standardized in maritime navigation and are designed to provide clear and immediate understanding of a vessel’s intentions, especially in situations where visibility may be compromised or distances are too great for visual communication.

Sound signals, such as horn blasts, are recognized internationally and serve as a quick method of alerting other vessels to one's presence and actions. For example, a vessel may use a specific sequence of sound signals to indicate turning directions or intentions to pass another vessel. This method is crucial in ensuring safety and preventing collisions on the water.

While visual signals, such as hand gestures or light signals, can also be used, they may not be as effective in conveying intentions at a distance or in low visibility. Oral communication generally requires proximity and clear auditory conditions, which may not be feasible in busy or noisy marine environments. Written notes would not be practical at sea and take too long to convey important information in urgent situations.

Thus, sound signals are the recommended form of communication in this context, making it essential for boaters to be familiar with the appropriate signals and understand their meaning to navigate safely and effectively.