RedactedNarrative: THE VICTIM WAS PARTICIPATING IN A RACING SCULL EVENT ON THE MERRIMACK RIVER. AS HE APPROACHED THE END OF THE RACE, HE STOPPED AND FELL IN THE WATER. WITNESSES ATTEMPTED TO LOCATE HIM AND BROUGHT HIM TO SHORE, WHERE CPR WAS STARTED.  CPR CONTINUED UNTIL FIRST RESPONDERS ARRIVED AND TRANSPORTED HIM TO ELLIOTT HOSPITAL IN MANCHESTER.  THEY ESTIMATED THAT HE HAD BEEN IN THE WATER FOR APPROXIMATELY 2 MINUTES AND THAT BASED ON HIS ACTIONS PRIOR TO GOING IN THE WATER, HAD A MEDICAL INCIDENT. CAUSE OF DEATH WAS DETERMINED TO BE DROWNING AFTER SUFFERING A CARDIAC DYSRHYTHMIA DUE TO HYPERTENSIVE HEART DISEASE..