The following is a list of the United States Navy ranks, starting with the highest rank and moving down the hierarchy:
1. Fleet Admiral (FADM): This is the highest rank in the United States Navy and is typically reserved for wartime or ceremonial purposes. It is a five-star rank and is held by the Chief of Naval Operations (CNO), who serves as the highest-ranking officer in the Navy.
2. Admiral (ADM): A four-star rank, Admiral is held by senior officers who command major naval fleets or serve in high-level leadership positions within the Navy.
3. Vice Admiral (VADM): A three-star rank, Vice Admiral is held by officers who command large naval formations, such as carrier strike groups or numbered fleets.
4. Rear Admiral (RADM): A two-star rank, Rear Admiral is held by officers who command major naval units, such as amphibious assault groups or individual carrier battle groups.
5. Commodore (CDRE): A one-star rank, Commodore is typically held by officers who command task groups or serve as chiefs of staff on the staffs of flag officers.
6. Captain (CAPT): A senior officer rank, Captain is held by officers who command major ships, such as aircraft carriers, cruisers, or submarines, as well as shore commands and other important positions.
7. Commander (CDR): A field-grade officer rank, Commander is held by officers who typically serve as executive officers of major ships or command smaller ships, such as destroyers, frigates, and submarines.
8. Lieutenant Commander (LCDR): A senior lieutenant rank, Lieutenant Commander is held by officers who serve in various leadership and staff positions within the Navy.
9. Lieutenant (LT): A junior commissioned officer rank, Lieutenant is held by officers who have completed their initial training and are assigned to various roles, such as division officers or department heads.
10. Lieutenant Junior Grade (LTJG): A junior commissioned officer rank, Lieutenant Junior Grade is held by newly commissioned officers who are still in the early stages of their careers.
11. Ensign (ENS): The lowest commissioned officer rank in the Navy, Ensign is held by newly commissioned officers who have just graduated from the United States Naval Academy or Officer Candidate School.
In addition to these commissioned officer ranks, the Navy also has a separate enlisted paygrade structure, ranging from Seaman Recruit (E-1) to Master Chief Petty Officer of the Navy (E-9).
It's important to note that the rank structure in the Navy is subject to change based on the needs and circumstances of the service, and the specific titles and responsibilities associated with each rank may vary over time.