Which organization regulates the transportation of explosives and other hazardous materials by water?

The U.S. Coast Guard is responsible for regulating the transportation of explosives and other hazardous materials by water. This organization ensures the safety and security of maritime operations, including the movement of hazardous cargo. The Coast Guard establishes standards and enforces regulations to minimize the risk of accidents during the transportation of these materials, safeguarding both the marine environment and public safety.

Additionally, it is essential to understand that the other organizations mentioned, while they each play significant roles in their respective areas, do not primarily focus on the regulation of hazardous materials in maritime transport. The Department of Transportation oversees transportation safety and infrastructure broadly, the Environmental Protection Agency focuses on environmental protection and pollution control, and the National Oceanic and Atmospheric Administration deals mainly with atmospheric and oceanic issues, including weather and climate.