33 C.F.R. § 127.207 Warning alarms.
Title 33 - Navigation and Navigable Waters
(a) The marine transfer area for LNG must have a rotating or flashing amber light with a minimum effective flash intensity, in the horizontal plane, of 5000 candelas. At least 50% of the required effective flash intensity must be maintained in all directions from 1.0 degree above to 1.0 degree below the horizontal plane. (b) The marine transfer area for LNG must have a siren with a minimum (c) Each light and siren must be located so that the warning alarm is not obstructed for a distance of 1.6 km (1 mile) in all directions. [CGD 78–038, 53 FR 3376, Feb. 7, 1988, as amended by CGD 88–049, 60 FR 39796, Aug. 3, 1995]
Title 33: Navigation and Navigable Waters
PART 127—WATERFRONT FACILITIES HANDLING LIQUEFIED NATURAL GAS AND LIQUEFIED HAZARDOUS GAS
Subpart B—Waterfront Facilities Handling Liquefied Natural Gas
Equipment
§ 127.207 Warning alarms.

