CFR > Title 33 - Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER NN—DEEPWATER PORTS (parts 148 to 150) > PART 149—DEEPWATER PORTS: DESIGN, CONSTRUCTION, AND EQUIPMENT > SUBPART E—Aids to Navigation (§149.500 to §149.585) > 149.585—What are the requirements for sound signals?

149.585—What are the requirements for sound signals?

(a) Each pumping platform complex must have a sound signal, approved under subpart of this chapter, that has a 2-mile (3-kilometer) range. A list of Coast Guard-approved sound signals is available from any District Commander.
(b) Each sound signal must be:
(1) Located at least 10 feet, but not more than 150 feet, above mean high water; and
(2) Located where the structure of the platform, or equipment mounted on it, does not obstruct the sound of the signal in any direction.