RedactedNarrative: Operator was returning from an overnight trip when he attempted to enter the channel and observed large crashing waves.  He determined the conditions were unsafe.  He tried to turn around when a large wave swamped then capsized the sailboat and he was thrown into the water.  He was able to grab onto a type IV throwable pfd device.  A good Samaritan was able to pick him up and return him to the harbor master's office.  He was not injured and declined any treatment.  Damage only accident.