United States Code
USC most recently checked for updates: Dec 15, 2019
An officer in the permanent grade of ensign shall be promoted to and appointed in the grade of lieutenant (junior grade) upon completion of three years of service. The authorized number of officers in the grade of lieutenant (junior grade) shall be temporarily increased as necessary to authorize such appointment.
If an officer in the permanent grade of ensign is at any time found not fully qualified, the officer’s commission shall be revoked and the officer shall be separated from the commissioned service.