The Fourth Fleet is headquartered at Naval Station Mayport in Jacksonville, Florida. It is responsible for U.S. Navy ships, aircraft and submarines operating in the Caribbean Sea, and the Atlantic and Pacific Oceans around Central and South America.
The Fourth Fleet is situated at Naval Station Mayport in Jacksonville, Florida, and it handles U.S. Navy vessels, aircraft, and submarines operating in the Caribbean Sea and surrounding areas of the Atlantic and Pacific Oceans.