Question 36 Rules of the Road

90% to pass

INLAND ONLY If you were coming up on another power-driven vessel from dead astern and desired to overtake on the other vessel's starboard side, which whistle signal would you sound?

A Two prolonged blasts followed by two short blasts
B Two short blasts
C One prolonged blast
D One short blast
AI Explanation

The correct answer is D) One short blast. When overtaking another power-driven vessel from dead astern on its starboard side, the International Regulations for Preventing Collisions at Sea (COLREGS) Rule 34(c) states that the overtaking vessel must sound one short blast to indicate its intention to pass on the starboard (right) side of the other vessel. This signals to the other vessel that you intend to overtake them on their starboard side. The other answer choices are incorrect because: A) is the signal for passing on the port (left) side, B) is the signal for crossing ahead of the other vessel, and C) is not the appropriate signal for this situation.

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