RedactedNarrative: UNIT 1 WAS TRAVELING SOUTH ON LAKE MOULTRIE WHEN IT STRUCK A FLOATING LOG/TREE.  THE ENGINE WAS RIPPED FROM THE VESSEL BUT REMAINED ATTACHED BY THE HYDRAULIC LINES.  BOTH OCCUPANTS WERE THROWN TO THE BOW WHERE THEY SUSTAINED INJURIES.  UNIT 1 AND THE OCCUPANTS WERE TOWED BACK BY ANOTHER BOATER.