RedactedNarrative: Operator of Vessel A was towing a tube with three passengers on it.  Operator turned left, causing tube to swing to the right into a tree extending from the shoreline.  Victim A was right side passenger on tube, she struck the tree causing bruising and pain to right arm, elbow and leg.  Victim A also suffered a large laceration to the right thigh.  Victim stated that operator was turning in a circle when she was swung into the tree.