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 Marlow White Navy Blue Military Uniform for Men (Size 39S) United States Navy Service Dress Blues Uniform Lieutenant History in the Making US Navy Dinner Dress Blue Jacket of Frederick Becton Patriots Point Naval & Maritime Museum Dinner Dress Whites for the Navy Ball in Singapore in 1996.