The incident described below occurred on 08/03/2013, at about 6:30 p.m. on Lake Washington South of I-90 in King county.
 
the owner/operator of this vessel and his passengers were drifting on Lake Washington, between the I-90 floating bridge and the North tip of Bailey Peninsula, during the Seattle SeaFair event.  Operator put the vessel's engine in gear while Victim (injured) was in the water behind the boat.  The propeller cut into Victim's legs cutting the femoral arteries.  Victim was treated at the scene and transported to Harborview Medical Center (HMC) by Seattle Fire Department Medics.  As of 2330 hours on 08/03/2013, Victim was in surgery at HMC and was listed in critical condition.
 
NOTE:  The reporting officer was not at the accident scene and had no contact with the injured person.  The information above was provided to the reporting officer at the Seattle Police Harbor Patrol station several hours after the accident by the passengers of the vessel and deputies from the King County Sheriff's Office.  
 
One injury / No fatalities.
There was no apparent alcohol involvement.
There was no vessel damage reported. 
No one involved in this incident was wearing a PFD.
The operator of the vessel had his mandatory Boater Education Card.
Rules of the Road Violation - No Proper Lookout.
Seattle