INLAND ONLY At night, which lights are required on barges moored in a group formation, more than two barges wide, and located where other vessels cannot navigate on both sides of the group?

Correct Answer: Option C — Two unobstructed all-round white lights

33 CFR 83.30(h)(ii) (Inland Rule 30) requires that for barges moored in a group formation, if the group is more than two barges wide and located where other vessels cannot navigate on both sides, it must be marked with two unobstructed all-round white lights at the extreme corners of the group.