Seven people were taken in good condition and two in fair-to-serious condition to St. Joseph Hospital and Rush University Medical Center, according to Chicago Fire Department information. Eleven people at the scene refused treatment. The Fire Department reported that the boat had about 150 passengers aboard.
According to a Wendella employee at the scene, the two-level boat lost power when pulling in and slammed full speed into the concrete dock. The employee said several people were treated for bumps, bruises and twisted ankles.
"We were pulling the boat over, and it just went straight into the wall," said Gabriel Arellano, 29, a passenger from Mexico City. "People were falling everywhere."
Fern Furst, of Schaumburg, also was on the boat.
"We realized it was coming in too fast," Furst said. "It crashed, and people on both the upper and lower decks went flying."
Furst said her husband, Gilbert, was taken to Northwestern Memorial Hospital. He had a knee injury, she said. Some people on the boat were bleeding after the accident, Furst said. A handful were taken away on stretchers.
Wendella suspended Monday boat tours after the accident.