United States Navy Service Dress Blues Uniform Lieutenant History in the Making Uniform: Tropical dinner dress blue, Navy enlisted men, ranks E 1 through E 6. Country: Unknown Stock Photo Alamy U.S. Naval Reserve c1923 Cadet's "Evening Dress, Blue" Jacket Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was formally phased out in 2011 : r navy Foraml Mermaid One Shoulder Royal Blue Satin Prom Dress Evening Dress