RedactedNarrative: UNIT 1 WAS TRAVELING SOUTH ON THE MISSISSIPPI RIVER IN THE TOWN OF SHELBY.  UNIT 1 WAS TOWING UNIT 2 BEHIND IT WITH A ROPE.  A FULLY LOADED TUGBOAT WITH BARGES WAS HEADED NORTH ON THE WEST SIDE OF THE CHANNEL.  UNITS 1 AND 2 WERE TO THE EAST OF THE TUGBOAT.  NON-CONTACT CABIN CRUISER WAS ALSO TRAVELING SOUTH.  CABIN CRUISER PASSED UNITS 1 AND 2 ON THE EAST SIDE OF THEM.  CABIN CRUISER CREATED A HAZARDOUS WAKE AS IT WENT PAST UNITS 1 AND 2.  DRIVER OF UNIT 1 SAID UNIT 1 WAS TOSSED AROUND IN THE WAKE.  DRIVER OF UNIT 1 SAID THAT UNIT 2 WAS SWAMPED WITH WATER FROM THE HAZARDOUS WAKE.  UNIT 2 WAS SUBMERGED IN THE WATER.  CABIN CRUISER CONTINUED SOUTH AND WAS NOT IDENTIFIED.  UNIT 1 AND 2 WERE NOT STRUCK DIRECTLY.  UNIT 2 WAS TOWED TO SHORE AND DRAINED.  UNIT 2 WAS RETIED TO UNIT 1.