RedactedNarrative: Passenger 2 left the boat to go swimming. Passenger 2 realized the boat was drifting away and yelled to the operator to bring a line.  The operator jumped into the water without a line and the boat drifted away from the two passengers in the water.  The two passengers were swimming for about an hour when the operator started having trouble swimming. Passenger 2 told the operator to get on his back and float and passenger 2 would swim for help.  After passenger 2 was swimming for an additional half hour another boat spotted passenger 2 and pulled her from the water.  The boat that rescued passenger 2 searched for a few minutes for the operator and then called the USCG. The operator was found floating face down by the USCG helicopter and transported to shore and then the hospital where he was pronounced dead.