Vessel #1 was attempting to navigate into her boat slip.  The operator confused the throttle positions during the process and drove vessel #1 onto the stern of vessel #2 which was parked in her slip.  Vessel #1 rode up on vessel #2 and onto a dock finger that separated the two slips.  Vessel #2 submerged under the weight of vessel #1 and partially sank in her slip.
Coeur d'Alene                 