Sweeping uniform changes emphasize gender neutrality 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 Navy & White Sailor Swing Dress Large Unique Vintage Floral Print Blue And White Chiffon Dress Blue Floral Print A Line Spaghetti Strap Dress Chiffon Uniform: Full dress blue, Navy enlisted women, ranks E 1 through E 6. Country: Unknown Stock Photo Alamy Uniform: Dinner dress blue, male Navy chief petty officers. Country: Unknown Stock Photo Alamy