Which federal regulations outline the authority for safety and security zones?

The correct choice highlights the relevant sections of the Code of Federal Regulations that specifically deal with safety and security zones in navigable waters.

Title 33 of the CFR focuses on navigation and navigable waters, addressing the authority to establish safety and security zones, which are critical for protecting both the maritime environment and public safety. Section 165 lays out the procedures and criteria for creating safety zones, defining the areas where vessel movement can be restricted to protect the surrounding environment or the public from potential hazards. On the other hand, Section 6 refers to the general authority of the Coast Guard to set regulations intended for the safety and security of vessels and ports.

The other options refer to sections of the CFR that pertain to different regulatory areas. For instance, 49 CFR deals with transportation regulations, which include matters related to hazardous materials and railroads, while 47 CFR focuses on communications regulations, such as those related to broadcasting and telecommunications. Thus, the specificity of 33 CFR 165 and 33 CFR 6 accurately addresses the framework necessary for implementing safety and security zones in waterways management.