Left, men's Formal Dress uniform with Blue Mess Jacket and white tie for officers. Center, men's US Navy Male Officer Dinner Dress Blue Jacket used 40 Regular (34 Sleeve) Black (USNA Flying Cross) 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 U.S. Naval Reserve c1923 Cadet's "Evening Dress, Blue" Jacket DVIDS Images CPO Dress Mess Blue Uniform [Image 3 of 10] MC Dinner Dress Blue Jacket