U.S. NAVY MALE CPO ENLISTED DINNER DRESS BLUE JACKET UNIFORM Navy Blue dinner dress 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 A Line Navy Blue Organza Formal Evening Dress V Neck Lace Prom Dress with Belt ARD1006 Male Officer Dinner Dress Blue U.S. NAVY MALE OFFICER DINNER DRESS BLUE JACKET UNIFORM