The yacht was hit by several large waves , causing it to tip over , the Coast Guard says . Coast Guard : Six people were on board the 2010 Speed Chase . Coast Guard and Air National Guard crews spent two days searching for the four before announcing the suspension Sunday night . The 2010 race took place near the Farallon Islands , near San Francisco .
The yacht was hit by several large waves , causing it to tip over , the Coast Guard says . Coast Guard : Six people were on board the 2010 Speed Chase . The 2010 race took place near the Farallon Islands , near San Francisco .