What is an acceptable method for attracting the attention of another vessel?

Making light or sound signals that are unmistakable is an effective method for attracting the attention of another vessel because it ensures that the signals are clear and can be easily recognized and understood by other mariners. The use of unmistakable signals is critical in maritime situations where visibility may be low or when there is a need to convey urgent information quickly. This principle is in line with the COLREGs, which emphasize the importance of effective communication between vessels to avoid collisions and ensure safe navigation.

Utilizing standard navigation lights alone may not be sufficient since their primary function is to indicate a vessel's position, heading, and status rather than to attract attention. Making signals that can be mistaken for authorized signals can lead to confusion and misunderstandings, potentially endangering maritime safety. Similarly, using high-intensity lights might be distracting or blinding and could create hazardous situations rather than effectively communicating intent or need. By focusing on signals that are simple and clear, mariners can enhance safety and ensure that their messages are received accurately by others on the water.