Senior chief petty officer

Senior chief petty officer (SCPO) was an enlisted naval rate, a type of military rank used by the service organizations of different cultures. As a traditional naval grade, SCPO was senior to a chief petty officer.

Personnel of this grade could be addressed simply as chief (or more properly, "senior chief"), and sometimes by their job title, such as "senior chief specialist." 

Senior Chief Petty Officer Jefe suboficial senior 上級兵曹長 Senior Chief Petty officer