Other origins for the name Nina include-English, Spanish, Native American, Hebrew, Spanish.The name Nina is most often used as a girl name or female name. English Name Meaning-Favor; grace. Variant of Ann or Anne: A variant of Hannah introduced to Britain in the 13th century.
Selection Process. Chief warrant officers are selected from enlisted members who have demonstrated exceptional long-term performance in various technical specialties. CWO programs are available to chief petty officers who have at least 12 but no more than 24 years of service.
The term stuck even in later years when the crews of ships became members of the navy, and navy ships had sailing masters, gunners and chaplains who were called warrant officers. This tradition carried over to the U.S. Navy, which recognizes a special class of former-NCOs called chief warrant officers.