USCG Exam PracticeAnchoring — types, scope, holding ground
A moored barge is positioned such that it reduces the available navigable width of a channel to 75 meters. Under 33 CFR §83.30, what lighting is required at night?
- A. Two all-round white lights visible for at least 2 nautical miles
- ✓ Two unobstructed all-round white lights visible for at least 1 nautical mileCorrect
- C. One all-round white light where it can best be seen
- D. No special lighting is required unless the barge exceeds 50 meters in length
Why B is correct
33 CFR §83.30(h)(ii) requires special lighting for any barge that reduces available navigable channel width to less than 80 meters; 75 meters meets this threshold. §83.30(i) specifies that such barges shall carry two unobstructed all-round white lights visible for at least 1 nautical mile. The 2-nautical-mile visibility figure is not prescribed in the rule.