<Table> <Tr> <Td> </Td> <Td> This article relies largely or entirely on a single source . Relevant discussion may be found on the talk page . Please help improve this article by introducing citations to additional sources . (July 2016) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article relies largely or entirely on a single source . Relevant discussion may be found on the talk page . Please help improve this article by introducing citations to additional sources . (July 2016) </Td> </Tr> <P> In the United States Navy, United States Coast Guard, United States Public Health Service Commissioned Corps (USPHS), and National Oceanic and Atmospheric Administration Commissioned Officer Corps (NOAA Corps), captain is the senior-most commissioned officer rank below that of flag officer (i.e., admirals). The equivalent rank is colonel in the United States Army, Air Force, and Marine Corps . The predecessors of the NOAA Corps--the United States Coast and Geodetic Survey Corps (1917--1965) and the Environmental Science Services Administration Corps (ESSA Corps) (1965--1970)--also used the rank . </P> <P> Reflecting its nautical heritage, the term "captain" also sometimes is used as a military title by more junior officers who are serving as the commanding officer (CO) of a commissioned vessel of the Navy, Coast Guard, or National Oceanic and Atmospheric Administration ship of patrol boat size or greater, while officers below O - 6 commanding aviation squadrons (typically O - 5 commanders) will usually use the less formal title of "skipper ." (see rank vs. title) </P>

How high is a captain in the navy