The United States Sailing Association is the national authority for sailing. It represents the U. S. in the ISAF (International Sailing Federation), the IOC (International Olympic Committee), and at all levels inside the U. S. The Northern California Yacht Racing Association (of which I am Chair) represents USSA Area G for racers in most of Northern California and part of Nevada. That's how sailboat racing is governed.
USSA publishes the "
Racing Rules of Sailing 2009-2012" (RRS) that governs all sailboat/board racing in the U.S.