RedactedNarrative: UNIT 1 WAS TRAVELING NORTH ON THE SENECA RIVER.  THE OPERATOR STATED THAT HE THOUGHT HE HAD MADE A LEFT TURN TO CONTINUE NORTH WHEN HE ACTUALLY NADE A RIGHT TURN.  UNIT 1 RAN AGROUND ONTO THE CLEMSON DIKE CAUSING DAMAGE TO THE PONTOONS AND ENGINE.  UNIT 1 WAS RECOVERED BY TOWBOAT US.