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 to begin testing new female dress uniforms at Naval Academy graduation If you could bring back one discontinued U.S. Navy uniform, which would you choose? The Aviation Working Green, the Winter Working Blue 'Johnny Cash', the Service Dress Blue (Yankee), or the Officers' Uniforms of the United States Navy Wikipedia