U.S. Navy Blue Dinner Dress Jacket Works Intrepid 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 Elegant A line Straps Tulle Navy Blue Prom Dresses Formal Evening Dres PreppyDress Royal Blue Mermaid Prom Dresses,Sequined Lace Evening Dress,PD00403, US24W Black