<Tr> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 410X </Td> <Td> 410X </Td> <Td> 410X </Td> <Td> 410X </Td> <Td> 310X </Td> <Td> 510X </Td> <Td> 655X </Td> </Tr> <Tr> <Td_colspan="7"> <P> An officer designator describes their general community or profession . The final (fourth) digit (X) denotes whether the officer has a regular (0), reserve (5), or full - time support (7) commission . </P> </Td> </Tr> <P> An officer designator describes their general community or profession . The final (fourth) digit (X) denotes whether the officer has a regular (0), reserve (5), or full - time support (7) commission . </P>

List of officer ranks in the us navy