A cabin cruiser carrying about 20 people capsized near Alcatraz Island in San Francisco Bay on Tuesday afternoon [1], [3].

The incident transformed a family memorial service into a mass rescue operation, highlighting the sudden dangers of bay waters even near the city shoreline.

Rescuers pulled survivors from the water after the vessel overturned [1]. One person died in the accident [4], and one dog also died [3]. Search teams reported between two and three people remained missing following the capsizing [5], [6].

The vessel involved was a cabin cruiser measuring between 49 and 50 feet [2], [7]. The exact cause of the capsizing has not been detailed in official reports [3], [8].

Emergency crews launched a multi-agency effort to locate those still in the water. An ABC 7 spokesperson said, "Right now we are in full rescue mode" [6]. Officials said search efforts for the missing individuals would be suspended at sundown [8].

Family members had gathered on the boat for a memorial service when the craft overturned [3], [8]. The tragedy occurred in the high-traffic waters surrounding the historic island prison, necessitating a coordinated response from local maritime authorities.

“Right now we are in full rescue mode”

The capsizing of a 50-foot vessel with 20 passengers suggests a potential issue with stability or overloading, though official cause-of-accident reports are pending. The proximity to Alcatraz Island and the rapid transition from a private event to a disaster underscores the volatility of San Francisco Bay currents and the critical need for immediate multi-agency coordination in urban maritime rescues.