On June 17, 2013, the Blue Whale (Vessel 1) was being operated by Operator1 who was docking the boat at Dusable Harbor.  While reversing Vessel 1 into the boat slip, Operator1 stated the boat begin to drift so in a panic she pushed the throttle all the way forward.  As a result Vessel 1 moved forward at a rapid speed striking the starboard stern of the motorboat Boatox (Vessel 3) causing fiber glass damage to the starboard side of the boat and also damage to the fiber glass of the engine compartment with the starboard side of Vessel 1.  Vessel 3 was unoccupied at the time.  Vessel 1, with its throttle still forward, continued in its forward path going across the harbor and striking the stern of the motorboat Blue Powder (Vessel 2) with the bow of Vessel 1.  Vessel 1 came up onto the stern of Vessel 2 hitting the back cabin doors and caused Vessel 2 to begin taking on water due to the weight of Vessel 1 on the stern.  Vessel 2 was unoccupied at the time.  Due to the wake of Vessel 1 hitting Vessel 2 it caused the sailboat Perico (Vessel 4) to come in contact with Vessel 1 and Vessel 2 causing paint damage to Vessel 4.  Vessel 4 was unoccupied at the time.

Vessel 1 received an estimated damage of $10,000.
Vessel 2 received an estimated damage of $30,000.
Vessel 3 received an estimated damage of $30,000.
Vessel 4 received an estimated damage of $ 500.

Operator1 was cited for careless operation of a motorboat 625/45/5-1
Chicago