What are Custom Waters defined as?

Custom Waters are defined as waters within four leagues, which is equivalent to 12 nautical miles, of the U.S. coast. This demarcation is significant as it places these waters within the jurisdiction of the United States, meaning that U.S. laws and regulations apply in these areas. The definition aligns with the concept of territorial seas, where a nation exercises sovereignty over adjacent waters to a certain extent, distinguishing them from international waters or high seas where different legal frameworks apply.

Understanding this definition is critical for various legal and operational aspects, such as fisheries management, law enforcement, and environmental protection. The concept of Custom Waters helps clarify the extent of a nation’s jurisdiction and the relevant laws that govern activities within these areas.