Question 369 Deck Safety

70% to pass

The color of the signal flares sent up by a submarine about to surface from periscope depth is _______________.

A yellow
B red
C green
D white
AI Explanation

The correct answer is D) white. The color of the signal flares sent up by a submarine about to surface from periscope depth is white. This is in accordance with the International Regulations for Preventing Collisions at Sea (COLREGS), which specify that a submarine about to surface should display a white signal flare to indicate its presence and intended action. The other answer options are incorrect because yellow, red, and green flares are not the standard signals used by submarines in this situation. White flares provide the most visible and recognizable indication to nearby vessels that a submarine is about to surface, allowing them to take appropriate precautions.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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