Vessel #2 docked and unoccupied.  Vessel #1 attempted to dock next to Vessel #2, east.  Vessel #1 was going forward then reverse to dock.  As Vessel #1 was moving in reverse, it struck Vessel #2 on lower left side of hull, just above the water level, then momentum of crash pushed vessel #2 into a wooded pilon causing a crack on the upper right of hull.
St. Clair Shores              