Operator was cruising on Dworshak reservoir when his 1989 Glastron boat struck a submerged log.  The operator estimates his speed to be approximately 28 mph.  The vessel ramped over the log allowing the lower unit collide with the log.  The lower unit was sheared off and hanging by the hydraulic cylinders.  The vessel then settled down and came to a stop.  The occupants remained seated and on board the vessel.  None of the occupants were wearing life jackets at the time of the accident.  No one was injured as a result of this accident.  The vessel remained floating and was towed to the boat ramp.
Orofino                       