RedactedNarrative: According to operator, the vessel was preparing to tow two children on the inner-tube like device. SUBJECT1 was standing at the aft of the vessel and paid out the tow line, and said to his mother (OPERATOR) the word "Clear"!, indicating the tow could begin.  As OPERATOR throttled up, SUBJECT1 observed that the tow line was moving too close to the outboard motor.  He grasped the rope to move it out of the way, but a loop formed in the rope that encircled his wrist.  As the rope loop tightened and eventually slipped off, SUBJECT1's left hand was partially amputated.
  
  With the help of a friend (on another vessel), OPERATOR brought SUBJECT1 to the clinic at Dangling Rope Marina where I treated him.  He was transported from the marina to a Type 1 trauma center by Classic Air Medical.  He is expected to recover fully.
  