RedactedNarrative: Single vessel incident on a jet ski.  V1 was towing an empty tube.  Two people were on the jet ski.  The passenger fell off the back in the water. The tow rope got pulled into the impeller.  The passenger in the water tried to pull the rope out at the same time as the operator gave the jet ski throttle and the rope sucked into the impeller, pulling the passenger violently into the back of V1 causing the injury. Both individuals were wearing life jackets. Use of alcohol was a contributing factor.  The operator had been drinking.