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 Billabong Love Letters Floral Midi Dress Urban Outfitters Canada Billabong Day dress mul blue Zalando File:US Navy 051003 N 9866B 004 Chief Boatswain's Mate Keith Oliver, left, evaluates his Sailors during a Service Dress Blues uniform inspection.jpg Wikimedia Commons Us Navy Dress Uniforms TikTok File:US Navy 091105 N 0718S 051 Sailors from the Center for Information Dominance Detachment Monterey stand in formation while waiting to be inspected in their service dress blue uniform.jpg Wikimedia Commons