The Artemis sailing team includes the gold medal winning Olympic sailor, Iain Percy, from Southampton, who is the sailing director and tactician. It is not known which crew members were onboard at the time of the capsize off San Francisco.
Two other British sailors, John Gimson, also from Southampton, and Andrew Simpson, from Surrey, are part of the AC sailing team. The Artemis website confirms their boat had capsized and says support boats are helping to recover the crew from the water.
More top news
Friday morning's forecast for the east of the region
Friday morning's forecast for the west of the region
Detectives have charged two men with the murder of Jason Martin-Smith in Hastings in 2001.