The rank "SN" signifies Seaman.
the naval rank below captain is Commander
None of those indicate a USN officer rank. Some might indicate some enlisted man's rank...but "SN" is often used to indicate SERIAL NUMBER and after the Vietnam War, it meant "SOCIAL SECURITY NUMBER." Today often termed SSN; but those letters can also mean NUCLEAR SUBMARINE (SS=Sub, N=Nuclear).
Ensign in the Navy or 2nd Lt in the Marines
The silver heart
An ammiral is an obsolete term for an admiral, a naval officer of the highest rank - the commander of a country's naval forces.
It doesn't appear to be a rank, it's probably "Office of the President"
The correct spelling of the high naval rank is admiral.
He ranked 59th out of 820
59th out of 820.
Family tradition. His Grandfather was a graduate and reached the rank of Admiral. His father was a graduate and reached the rank of Admiral.
they were based on military rank
President Jimmy Carter was once a US Navy Lieutenant.