USCG Exam Practice · Anchoring — types, scope, holding ground
A moored barge reduces the available navigable width of a channel to 75 meters. Under the Inland Navigation Rules, what lighting is required for this barge at night?
- ANo lights are required because the barge is moored, not anchored
- BTwo unobstructed all-round white lights visible for at least 1 nautical mile✓ correct
- COne all-round white light where it can best be seen
- DTwo all-round red lights in a vertical line
Why B is correct
33 CFR §83.30(h)(ii) requires a barge that reduces the available navigable width of any channel to less than 80 meters to display lights at night. §83.30(i) specifies those lights shall be two unobstructed all-round white lights of an intensity visible for at least 1 nautical mile. A channel width of 75 meters is less than 80 meters, triggering this requirement.
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