Tonkin Gulf Yacht Club was a tongue-in-cheek nickname for the United States Seventh Fleet during the Vietnam War. The name "Tonkin Gulf Yacht Club" was used from 1961 when the Seventh Fleet arrived to the waters off Vietnam and carried out most of its operations from the Gulf of Tonkin. Although the insignia for the Tonkin Gulf Yacht Club always remained unofficial, it became very popular. The yellow and red background colors are those of the flag of the Republic of Vietnam.
U.S. Navy
1968
U.S. Navy photo <a rel="nofollow" class="external autonumber" href="https://www.navysite.de/cruisebooks/cv66-68/064.htm">[1]</a> from the <a rel="nofollow" class="external text" href="https://www.navysite.de/cruisebooks/cv66-68/index_005.htm">USS <i>America</i> (CVA-66) 1968 cruise book</a> available at <a rel="nofollow" class="external text" href="http://navysite.de/cruisebooks/index.html">Navysite.de</a>