RedactedNarrative: OPERATOR AND PASSANGER WERE SAILING ON V1 IN ROUGH WATER AND STRONG WINDS WHEN V1 CAPSIZED.  OPERATOR AND PASSANGER DECIDE TO SWIM TO SHORE. SOMEONE FROM SHORE SAW THE CASIZED VESSEL AND CALLED 911.  BY THE TIME OPERATOR AND PASSANGER WERE RESCUED THEY WERE VERY HYPOTHERMIC.  TOOK TO SHORE AND TRANSPORTED TO HOSPITAL FOR MEDICAL SERVICE.  PFD USED,  ALCOHOL NOT A FACTOR AND NO MECHANICAL FAILURE.