RedactedNarrative: Vessel 1 was traveling west on the Intracoastal Waterway at approximately the area of navigational marker 93. 
  
  The operator of vessel 1 engaged the auto pilot.  As the auto pilot engaged, the vessel took a hard starboard turn to the mainland.  The operator began to correct the unpredicted sudden turn by putting the vessel in reverse and was unable to correct the turn before it struck the dock.  After the vessel struck the dock, it then came to a stop pointing east from the direction it came.   Damage was done to the dock and boat lift.
  
  Mechanical failure is believed to be the contributing factors for the incident. Alcohol nor drugs were not believed to be a contributing factor.  Vessel 1 was equipped with all required safety equipment.
  
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  END OF REPORT