33 C.F.R. § 90.5 Lights for moored vessels.
Title 33 - Navigation and Navigable Waters
A vessel at anchor includes a vessel made fast to one or more mooring buoys or other similar device attached to the ocean floor. Such vessels may be lighted as a vessel at anchor in accordance with Rule 30, or may be lighted on the corners in accordance with 33 CFR 88.13. [CGD 94–011, 63 FR 5732, Feb. 4, 1998]
Title 33: Navigation and Navigable Waters
PART 90—INLAND RULES: INTERPRETATIVE RULES
§ 90.5 Lights for moored vessels.

