overnight they launched a search for rubalcaba and larissa castaneda, the sole survivor. she told her sister the boot took in water. >> they couldn't get back on the boat. that's all she remembers. >> reporter: castaneda is in the hospital lucky to be alive. >> there were reports that they heard cries for help. >> reporter: the older rubalcaba was found half an hour later and died at the hospital. >> that's terrible. very sad. >> reporter: al salchi owned the waterfront restaurant in san francisco where the elder rubalcaba work in the kitchen for the last year. >> there's a lot of grief. when you work with somebody and you enjoy having them around you for eight hours a day, it's a big difference. >> reporter: what a difference a day has made in the lives of two families. >> everybody is devastated right now. and really upset and sad. you know. it's very sad what happened. >> reporter: the three were wearing life vests but it wasn't enough. if they had over safety things with them like a vhf radio they didn't use it because that call for help calm from their family when th