A father and son were thrown overboard when their Boston Whaler collided with a 46-foot cruiser.
An afternoon boat outing for a father and son turned tragic Wednesday when the small boat they were in collided with a larger boat in the San Francisco Bay.
The Coast Guard said the smaller boat capsized on impact throwing the two into the water. The father was able to climb on to the hull of the capsized boat, but his son was trapped for a time in the hull of the boat.
The collision happened near San Francisco's Hunter's Point around 12:30 p.m.
Witnesses on the scene told NBC Bay Area that the two were brought to shore following the crash. They said one person was conscious, but the second victim appeared to be in distress and was given CPR. The Coast Guard confirmed the son died of his injuries after arriving at SF General.
During the initial search, patrol officers were also seen in the area searching on jet skis.
The larger boat appeared to be registered out of Portland, Oregon and remained on the scene during the search. The larger motor boat was a 46-footer. The boat the father and son were in was a 19-foot Boston Whaler, according to the Coast Guard.
It was not immediately known what caused the initial impact.
The Coast Guard was attempting to tow the capsized boat from the scene at 2:30 p.m.
Initially it was believed the son was a child. He was an adult in his 20s. The Coast Guard blamed the discrepancy on a language barrier. They said the victims were Vietnamese, and did not speak English.