RedactedNarrative: Unit 1 was following another vessel east on the Waccamaw river and hit the other vessels wake. The operator of Unit 1 stated the stern of the vessel caught the wake and caused the boat to violently spin left throwing the passenger out of her seat and into the water, where she was struck on upper right back by the boat propeller, causing a 6 inch cut. Victim was retrieved from the water and taken to the landing and treated at hospital. Operator arrested for BUI.