Sea control refers to the ability of a nation or military force to establish and maintain dominance over maritime areas. This involves ensuring safe passage for its own vessels while denying access to adversaries. Sea control is crucial for protecting trade routes, conducting naval operations, and supporting ground forces. Achieving sea control typically requires a combination of naval power, including surface ships, submarines, and aircraft. It also involves intelligence gathering and surveillance to monitor enemy movements. Nations like the United States and China invest heavily in their navies to secure their interests and project power across the world's oceans.