33 C.F.R. § 146.105 General alarm system.
Title 33 - Navigation and Navigable Waters
Each manned facility must have a general alarm system. When operated, this system shall be audible in all parts of the structure on which provided.
Title 33: Navigation and Navigable Waters
PART 146—OPERATIONS
Subpart B—Manned OCS Facilities
§ 146.105 General alarm system.

