A Navy YN1 is a Navy Yeoman (First Class Petty Officer). The job is essentially an office administrator.
YN stands for Yeoman. The 1 indicates a First Class Petty Officer. They would be an E-6 on the pay charts.
Admiral
YN stands for Yeoman. The 1 indicates a First Class Petty Officer. They would be an E-6 on the pay charts.
Navy
in the navy we call them a padre
lieutenant 
it was called royal navy
2174
Navy Log - 1955 Call Conrad 3-2 was released on: USA: 25 September 1957
The were a staple of the United States Navy diet during the 19th century.
That is how navy officers call other officers below their rank, regardless of their gender.
Call 1800-USA-NAVY or go to Navy.com and request information. They will mail you some info and a local navy representative will contact you as well.