US Navy Dinner Dress Blue Jacket of Frederick Becton Patriots Point Naval & Maritime Museum 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 Uniform: Dinner dress blue jacket, male Navy officers PICRYL Public Domain Media Search Engine Public Domain Search Navy Blue Maxi Velvet Formal Prom Evening Dress TS2601 Size 4 Navy