VINTAGE USN NAVY UNIFORM DRESS JACKET POST VIETNAM WAR BUILLON PATCH S Rare Gear USA Original Production Quality Blue Naval Officer Adult Uniform Buy Medium According to the 1975 U.S. Navy Uniform Regulations, the rarely seen Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was US Navy Military Uniform Yacht Captain Suit Dinner Costume Jacket Pant Hat Set eBay