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USCG Exam Practice · Rule 30 — Anchored and Aground (lights)

Under Inland Rule 30, a moored barge that reduces the available navigable width of a channel to 70 meters is required to display, at night, which of the following?

  1. ATwo all-round red lights in a vertical line
  2. BTwo unobstructed all-round white lights visible for at least 1 nautical mile✓ correct
  3. COne all-round white light where it can best be seen
  4. DSidelights and a sternlight

Why B is correct

33 CFR §83.30(h)(ii) requires a barge that reduces available navigable channel width to less than 80 meters to display the lights described in §83.30(i), which are two unobstructed all-round white lights visible for at least 1 nautical mile. A channel width of 70 meters is less than 80 meters, triggering this requirement.

Cited:33 CFR §83.30(h)(ii)33 CFR §83.30(i)

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