USCG USCG GENNAV
Set 7 • Question #182 of 246
Launch Interactive Practice Room Under the U.S. Aids to Navigation System, a lighted buoy with a spherical topmark marks __________.
A
safe water
✓ Correct Answer
B
a fish trap area
C
a hazard to navigation
D
a bifurcation in the channel
USCG NMC Regulatory Explanation
Under IALA Region B (U.S. waters), safe water marks feature red and white vertical stripes, a red spherical topmark, Morse Code 'A' white flashing lights, and are lettered rather than numbered.
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