USCG Exam Practice · Rule 30 — Anchored and Aground (lights)
Under the Inland Navigation Rules, which vessels are required to use available working or equivalent lights to illuminate their decks while at anchor?
- AAll vessels at anchor in a designated anchorage area
- BVessels of 50 meters or more in length
- CVessels of 100 meters or more in length✓ correct
- DVessels of 75 meters or more in length
Why C is correct
33 CFR §83.30(c) states that a vessel at anchor may use working lights to illuminate her decks, but a vessel of 100 meters or more in length shall do so. The 50-meter and 75-meter thresholds appear elsewhere in the rules but not in this provision.
Cited:33 CFR §83.30
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