Navy Uniforms: Women's Service Dress Blue, E 1 through E 6. 1984 Uniform Regulations, Page 8 11 PICRYL Public Domain Media Search Engine Public Domain Search Uniform: Full dress blue, Navy enlisted women, ranks E 1 through E 6. Country: Unknown Stock Photo Alamy According to the 1975 U.S. Navy Uniform Regulations, the rarely seen Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was USN Officer Sleeve Rank Timeline