RedactedNarrative: On 05/09/2014, I OFC received a call from DNR communications about a boat accident that occurred on the Susquehanna Flats off shore from Perry Point VA Hospital.   When I arrived on scene the vessel had been towed to the VA boat ramp and the operator had been transported to Harford Memorial Hospital. I contacted NRP CPL. in Harford County. I asked her to  go to the hospital to get information from Victim. The passenger was not injured. I spoke with him about what had occurred.  He stated that they had left Tidings Marina in Havre de Grace sometime after 0630 am.  He said they were cruising across the Susquehanna Flats when he heard the engine rev. up and the boat suddenly turned sharply to the port side (left).  He stated  that it felt like they had done at least one complete 360 degree turn. He said both of them were ok but Victim was complaining of shoulder pain. Occupant stated that two good samaritan vessels had arrived to help them.  The operator was taken to the hospital suffering from a laceration to the back of his head, a broken collar bone, and possible broken left shoulder. All injuries were non-life threatening.
  	 One witness following behind them in another vessel.   I interviewed Witness. He stated that he was cruising at about 4000 RPM (40 mph) and a few hundred yards behind Victim's vessel.  He saw the motor kick into the air and then a lot of water spray into the air. He said that they had hit a submerged log.  He saw it surface after the boat had hit it. He rushed to the vessel to check on the occupants. He said Victim was complaining of shoulder pain. Victim was taken to shore where he received initial medical care. A third boat towed the vessel to the VA hospital boat ramp.  The vessels outboard motor had been almost completely ripped off the stern. The only part holding the motor was the hydraulic cylinder and steering cables.
  	 Once the vessel was pulled out of the water I inspected the hull and outboard motor.  There wasn't any damage to the hull. All of the damage occurred to the outboard which was laying on the ground behind the trailered vessel.  There is damage to the lower unit consistent with hitting a submerged log. Small pieces of wood were stuck on the leading edge of the lower unit.   Weather conditions for the morning were overcast with wind coming out of the ESE at <5 knots with calm seas. There was some fog with visibility of at least one mile. Air temp. was at 58 degrees F and water temp was at 59 degrees F.  At the time of the accident it was determined that the vessel was traveling in ENE direction and was traveling 40-50 mph when it struck the submerged object. Both occupants were thrown within the vessel causing injuries to the operator. The operator nor occupant were wearing PFD's.  At this time it has been determined that no violations occurred at the time of the accident. All events occurred in Cecil County, Maryland.