RedactedNarrative: Both V1 and V2 were traveling south bound on the Colorado River inside Bullhead City, Arizona.  Both were closer to the Arizona shoreline.  V1 was to the right and slightly in front of V2.  The operator of V1 made a quick turn to port and crossed over in front of V2.  V2 struck V1 and went over top of V1.  Operator 1 was struck on the back and was ejected into the water.  Operator 1 was removed from the water and CPR was started.  He was pronounced deceased at Western Arizona Regional Medical Center.  An autopsey revealed that O1 sustained a lacerated spleen, left lung and had several broken ribs on the left side.