USCG Exam Practice · Rule 6 — Safe Speed
At night, Rule 6 identifies a specific lighting condition that all vessels must consider when determining safe speed. What is that condition?
- AThe luminous intensity of the vessel's own navigation lights
- BThe presence of background light such as from shore lights or from back scatter of her own lights✓ correct
- CThe range of visibility of the vessel's masthead light
- DThe number of vessels detected by radar whose lights are not visible
Why B is correct
33 CFR §83.06(a)(iv) specifically identifies 'the presence of background light such as from shore lights or from back scatter of her own lights' as a nighttime factor for all vessels in determining safe speed.
Cited:33 CFR §83.06
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