Uniform: Dinner dress blue jacket, male Navy officers PICRYL Public Domain Media Search Engine Public Domain Search Elizabeth K GL1506 Prom Dress Navy NewYorkDress Navy Blue Maxi Velvet Formal Prom Evening Dress TS2601 Size 4 Navy MC Dinner Dress Blue Jacket Elegant Off Shoulder Navy Blue Evening Dress with Cape SS206 Navy Blue 14 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