Rescuers described survivors trying to stay afloat in the San Francisco Bay after a boat sank near Alcatraz on Saturday. Officials said the vessel rolled after being struck by a large wave, throwing passengers into the cold water. The incident occurred around midday when a recreational craft carrying multiple passengers encountered a sudden swell and capsized rapidly.

The Coast Guard and San Francisco Fire Department responded quickly, pulling several people from the water. A brother of the boat's owner died at the scene, and authorities announced they will end the search for one missing person after exhaustive efforts. Witnesses reported seeing the boat overturn suddenly in rough conditions near the famous island prison.

An investigation into the cause of the sinking is underway, with officials examining weather conditions and the boat's capacity. The National Transportation Safety Board may review the case. The tragedy underscores the dangers of the bay's unpredictable currents and waves, prompting renewed warnings for boaters to check forecasts and wear life jackets.