46 C.F.R. § 15.1050
(a) The following navigable waters of the United States within the State of North Carolina when the vessel is maneuvering while berthing or unberthing, is approaching or passing through a bridge, or is making any intra-port transit, which transit may include but is not limited to movement from a dock to a dock, from a dock to an anchorage, from an anchorage to a dock, or from an anchorage to an anchorage, within either of the following areas:
[CGD 97-073, 63 FR 57255, Oct. 27, 1998]