RedactedNarrative: OPERATOR OF VESSEL ONE BEGAN TAKING ON WATER JUST MINUTES AFTER LAUNCHING.  OPERATOR OF VESSEL ONE WAS ABLE TO GET THE BOAT TO THE SHORE WHERE HE AND THE OCCUPANTS TIED IT OFF TO A TREE.  VESSEL ONE BECAME COMPLETLEY SUBMERGED OTHER THAN THE BOW.  OPERATOR OF VESSEL ONE STATED HE DID NOT CHECK TO SEE IF THE PLUG WAS IN BEFORE LAUNCHING. WHEN V1 WAS RECOVERED IT WAS CONFIRMED THAT THE DRAIN PLUG WAS NOT IN.