RedactedNarrative: Unit 1 went on a late night cruise and ran aground two times. OPerator got in the water for long periods of time to free the boat. Operator began experiencing effects of hypothermia from 59 degree water. Operator passed away the morning of 5/30/2014 occupant was rescued on the morning of 5/31/2014 and treated for exposure at MUSC hospital than released.