33 C.F.R. § 88.09 Temporary exemption from light and shape requirements when operating under bridges.
Title 33 - Navigation and Navigable Waters
A vessel's navigation lights and shapes may be lowered if necessary to pass under a bridge.
Title 33: Navigation and Navigable Waters
PART 88—ANNEX V: PILOT RULES
§ 88.09 Temporary exemption from light and shape requirements when operating under bridges.