What is a characteristic of cardinal marks?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Light rhythms indicating directional orientation
IALA Maritime Buoyage System defines cardinal marks by their light rhythms. Each quadrant is assigned a specific number of flashes, such as VQ or Q for North, and varying combinations for East, South, and West, allowing mariners to identify the safe side of a hazard based on the light's characteristic.
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