33 C.F.R. § 118.120 Radar reflectors and racons.
Title 33 - Navigation and Navigable Waters
The District Commander may require or authorize the installation of radar reflectors and racons on bridge structures, stakes, or buoys. Radar reflectors are used to mark the location of the edge of the navigation channel or bridge channel piers. Racons are used to mark the centerline of the channel. [CGD 84–022, 51 FR 16313, May 2, 1986]
Title 33: Navigation and Navigable Waters
PART 118—BRIDGE LIGHTING AND OTHER SIGNALS
§ 118.120 Radar reflectors and racons.