The operator was attempting to get back to harbor before dark.  She realized she had traveled too far and turned around staying close to shore.  She entered a buoyed area and struck a piling on the port side.  The boat began to take on water.  The operator dialed 911 and the USCG and Chicago Fire Department responded.  The operator and passengers were taken safely to shore.  The boat was removed from the piling at a later date.
Chicago                       