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 can not navigate on both sides of the group?

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

Inland Navigation Rules regulations require barges moored in wide group formations where traffic cannot pass on both sides to display unobstructed all-round white lights marking the perimeter extremities for night navigational safety.