RedactedNarrative: A passing boater found an unmanned boat running. He disabled the fuel line and called the harbor master. A search and rescue began. Operator was found floating on his back near the entrance to the Plymouth Harbor Channel approximately 150 yards east of the #1 buoy. Rescuers observed the injured having very limited motor skills.
  
  Operator noticed the pontoons were under deflated and stood up and attempted to move forward toward the bow. He positioned himself to use the Manuel air pump but a wave had rocked the vessel enough for him to lose his balance and fall over the port side into the water. He was in the water for 3 hours before he was rescued. He was not wearing a life jacket. He had a kill switch lanyard attached to his belt but was ineffective due to the separation of the cord from the key.