The characteristic of a lighted cardinal mark may be __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — very quick flashing
IALA cardinal marks utilize specific light characteristics to indicate their orientation. North marks show continuous very quick (VQ) or quick (Q) flashes. East marks show group flashing (3), South marks show group flashing (6) plus a long flash, and West marks show group flashing (9). Thus, very quick flashing is a valid characteristic.
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