Question 198 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in illustration D017RR below and will pass without changing course. Which light will vessel "A" observe on vessel "B"?

Diagram for USCG Rules of the Road: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in...
A green sidelight
B white stern light
C yellow towing light
D None of the above
AI Explanation

The correct answer is B) white stern light. According to the International Regulations for Preventing Collisions at Sea (COLREGS), when a vessel is overtaking another vessel, the overtaking vessel (Vessel A) shall keep out of the way of the vessel being overtaken (Vessel B). In this situation, Vessel A will observe the white stern light of Vessel B, as the stern light indicates the direction the vessel is heading. The other answer choices are incorrect because: A) the green sidelight would not be visible from the overtaking position, C) the yellow towing light is not relevant in this scenario of a simple overtaking maneuver.

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