RedactedNarrative: The Operator of Vessel 1 fell overboard for an undetermined reason while Vessel 1 was in operation.  Vessel 1 was still in gear at the time of the incident and was circling the Operator after he fell into the water.  Vessel 1 was at idle speed, so the Operator was able to grab onto Vessel 1 and pull himself back on board.  Once back inside Vessel 1, the Operator was seen sitting on the rear bench seat holding his chest.  The Operator of Vessel 1 then went to his knees for a few seconds, then resumed his position back on the bench seat.  The Operator was then seen grabbing his chest a second time before collapsing onto the deck of Vessel 1.