Deck General USCG Question #218 (Set 6)

While standing look-out at night, a dim light on the horizon will be seen quickest by looking __________.

Official USCG Answer & Rule Citation

Correct Answer: Option B — a little above the horizon

Human retinal rod cells are concentrated off-center. Looking slightly above or to the side of a dim target utilizes off-center vision, maximizing night vision sensitivity for faint objects on the horizon.

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