Question 982 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are meeting in a narrow channel as shown in illustration D029RR below but are not in sight of one another due to restricted visibility. Which statement is TRUE concerning whistle signals between the vessels?

Diagram for USCG Rules of the Road: BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are meeting in a narrow channel...
A Both vessels should sound two short blasts.
B Vessel "A" should sound one short blast and vessel "B" should sound two short blasts.
C Both vessels should sound one short blast.
D None of the above statements is TRUE.
AI Explanation

The correct answer is D) None of the above statements is TRUE. The reason this is the correct answer is that in a narrow channel with restricted visibility, as described in the scenario, the appropriate whistle signals are not one short blast, two short blasts, or any combination thereof. Instead, the International Regulations for Preventing Collisions at Sea (COLREGS) Rule 34(e) states that in this situation, both vessels should sound the danger signal, which is five or more short and rapid blasts on the whistle. This alerts the other vessel to the restricted visibility and potential danger of the situation, prompting both vessels to take appropriate action to avoid a collision.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG Navigation Center
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