RedactedNarrative: OPERATOR STATED AS THEY WERE TRAVING UP THE RIVER HE NOTICED A LOG FLOATING SO HE EASED OVER TO THE RIGHT TO AVOID IT. HE THEN REALIZED THE LOG WAS BIGGER THAN HE THOUGHT AND IT WAS SUBMERGED. WHEN V1 WENT OVER THE LOG, IT RIPPED THE LOWER UNIT OFF V1. V1 IMMEDIATELY BEGAN TAKING ON WATER.  THEY TRIED TO PULL IT TO THE BANK UNSUCCESSFULLY DUE TO THE CURRENT. V1 EVENTUALLY CAPSIZED AND CAME TO REST FURTHER DOWN THE RIVER WITH ONLY THE BOW STICKING UP.  V1 WAS UNABLE TO BE RETRIEVED UNTIL 05/27 DUE TO RIVER CONDITIONS.