Four crab fishermen died Saturday when their boat capsized off the California coast near San Francisco, CNN reports.

Amazingly, one fisherman survived the ordeal and was rescued. He was able to tell police that powerful waves turned their boat over and all five individuals on board were thrown into the water. CNN says that, according to authorities, no one was wearing a life vest at the time of the incident.

According to the SFGate, three of the four individuals who died have been identified. The victims are 79-year-old Jessie Daniel Langley, 86-year-old Samuel Garcia and 60-year-old David Costa. One woman also died in the tragic accident, but her name won’t be released until officials contact her family.

66-year-old Phillip Sanchez was the sole survivor.

SFGate reports that, according to Sonoma County Sheriff’s Sgt. Cecile Focha, Sanchez was spotted by a sheriff’s department helicopter. He was hoisted off a rocky shoreline and taken to a hospital with non-life threatening injuries.