FO Service Dress Blue Navy Dress Blues, Family Outfit Ideas Morning Owl Fine Art Photography 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 Royal Blue Maxi Dress Velvet Sequin Dress Lace Up Dress Lulus Gothic Royal Blue Prom Dress with Cape Sleeves Designer Sequin Dress WonderlandByLilian United States Navy enlisted dress uniform, ca. 1945 Maine Memory Network