RedactedNarrative: UNIT 1 WAS TRAVELING UP THE EDISTO RIVER NEAR LONG CREEK.  UNIT 3 WAS FOLLOWING UNIT 2 DOWNRIVER.  UNIT 1 AND 2 SAW EACH OTHER AND SLOWED DOWN WHILE TURNING TO PORT.  UNIT 3 WAS WATCHING UNIT 1 AND NOT PAYING ATTENTION TO UNIT 2.  UNIT 3 TURNED SHARPLY AND HIT THE WAKE OF UNIT 2 EJECTING BOTH OCCUPANTS.  THE PASSENGER OF UNIT 3 SUFFERED A FRACTURED ARM AS A RESULT.