COLREGs Rules of the Road Practice Test 2025 – Complete Exam Prep Resource

Question: 1 / 400

How often should sound signals be used in restricted visibility?

Every minute

Every five minutes

At least once every two minutes

In situations of restricted visibility, where obstacles or other vessels may not be readily visible, vessels are required to use sound signals at least once every two minutes. This practice enhances safety by informing other nearby vessels of one’s presence and navigational status, as sight is often limited. The intention behind this regulation is to mitigate the risks of collisions, as sound signals are a crucial means of communication in these conditions.

Utilizing sound signals at this prescribed interval establishes a routine that ensures vessels are continually aware of each other, providing an auditory indication of their movements and intentions. This is particularly important in dense fog, heavy rain, or other conditions that obscure visual cues. While it may be tempting to use sound signals only when necessary, maintaining a consistent interval significantly contributes to the overall safety and navigational awareness in restricted visibility scenarios.

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Only when necessary

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