33 C.F.R. § 67.20-10 Sound signal.
Title 33 - Navigation and Navigable Waters
(a) The owner of a Class “A” structure shall: (1) Install a sound signal that has a rated range of at least 2 miles; and, (2) Operate the sound signal when the visibility in any direction is less than 5 miles. (b) The District Commander may waive any requirements in paragraph (a) of this section if he or she finds that a structure is so close to other structures and so enveloped by the sound signals on other structures that it is not a hazard to navigation. [CGD 72–74R, 37 FR 13513, July 8, 1972, as amended by USCG–2001–10714, 69 FR 24984, May 5, 2004]
Title 33: Navigation and Navigable Waters
PART 67—AIDS TO NAVIGATION ON ARTIFICIAL ISLANDS AND FIXED STRUCTURES
Subpart 67.20—Class “A” Requirements
§ 67.20-10 Sound signal.
