Dating from the nineteenth century, the U.S. Navy boat cloak was still an optional item for the evening dress uniform in the 1950s. Decades after falling out of fashion, the cape finally Uniforms of the United States Navy Wikipedia 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 Military Dress Uniforms by Branch: A Guide USAMM Evening Dress USMC Uniform Guide US Navy Dinner Dress Blue Jacket of Frederick Becton Patriots Point Naval & Maritime Museum