RedactedNarrative: Vessel 1 was getting underway from McKinley Marina’s west seawall located on the courtesy dock.  Vessel 1 Operator drifted south and the vessel moved broadside to the peri.  Vessel 1 Operator then powered the engines forward to avoid impact with fixed object / Milwaukee Police Department Vessel 2.  Vessel 2 was moored and unoccupied.  
  
  Vessel 1 made contact with the fixed object causing damage to both the fixed object and Vessel 1.  Vessel 1 then left the area without contacting the owner.  Witness observed incident, grabbed a boathook, and assisted to minimize the damage that Vessel 1 caused.  Witness reported this to the police when he saw Vessel 1 docking their other boat later the same day.