RedactedNarrative: On 4/17/15 at approximately 2:00pm, vessel 1 owner, was preparing to load his vessel onto his trailer.  At this same time, vessel 2 operator, had unloaded his boat and was preparing to launch from the dock.
  
  As operator1 was backing his trailer into the water, he heard a boat motor rev up very loudly.  He stopped and looked in his rear view mirror.  He noticed vessel 2 turn two counter clock wise circles between the docks and strike the bow of his vessel which was tied to the dock.  Operator2 was able to gain control of vessel 2 by pulling the throttle back to neutral.  Operator1 exited his vehicle and ran to assist operator2 back to the dock.  Operator2 was okay and both men loaded their vessels and pulled to the top of the parking.  I was called.
  
  I responded to complete the accident investigation.  In speaking with both subjects, all stories matched.  I had both parties complete the mb4.1 forms while i took photos and started the mb4.2.  Upon operator1 completing his accident form, he left the scene.  I then turned my attention to operator2.  Operator2 said his vessel had cranked in gear with the choke in the full open position.  I examined the choke and throttle shifter.  I was unable to get the motor to fire with the throttle out of the neutral position.
  
  I believe operator2 was attempting to crank his motor with the choke fully opened.  When the motor started and with the choke fully opened, the motor very rapidly revved up.  I believe operator2, instead of cutting back on the choke to slow the engine, pushed to throttle into forward gear causing the vessel to take off at a full throttle.  Vessel 2 turned two counter clockwise circles between the docks striking operator1's vessel, vessel 1.
  
  There was no damage to vessel 2.  Vessel 1 did sustain damage to the trolling motor, trolling motor bracket and to the fiberglass on the starboard side as pictures indicate.  All information was exchanged between the subjects.
   