RedactedNarrative: Victim was driving his speed boat east towards the no wake zone around the east boat ramp at Cheney reservoir. Victim was traveling at appromiately 50 mile per hour. Several witnesses stated that it looked like his low profile boat hit a wave or a wake which caused the bow to lift into the air.When the bow came back down it hit another wake and nosed under the water. The boat then flipped end over end a couple of times and sank. Victim sustained injuries to his ribs and lungs from the impact. Bystander loaded Victim and his passenger into their boat and transported them to the dock. Victim was transported to a Wichita area hospital for treatment.