RedactedNarrative: UNIT 1 WAS TRAVELING NORTHBOUND ON THE WANDO RIVER AND TURNED INTO HORLBECK CREEK.  AS IT BEGAN TO PASS UNDER POWER LINES, THE OPERATOR REALIZED THAT THE VESSEL MAST WAS NOT GOING TO CLEAR THE LINES.  THE MAST MADE CONTACT WITH THE LINES.  THE MAST WAS BENT AND ALL ELECTRONICS ON BOARD WERE DISABLED.