What is the primary function of the U.S. Navy?

The primary function of the U.S. Navy is to maintain naval supremacy and protect maritime interests. This encompasses ensuring the freedom of navigation on the seas, projecting power overseas, and safeguarding the United States and its allies from maritime threats. The Navy plays a crucial role in deterrence and defense, conducting operations that secure trade routes and respond to global crises.

While conducting aerial warfare is typically associated with the Air Force, and overseeing ground troop operations is primarily the responsibility of the Army, the Navy does have capabilities to support ground operations from the sea, although it is not its primary function. Providing humanitarian assistance is also a significant task for the Navy, especially during disasters or crises; however, it is not the core mission. The central aspect of the Navy's operations remains its role in protecting and maintaining control of the seas, as this is vital for national security and global stability.