RedactedNarrative: UNIT 1 WAS ANCHORED WHILE OCCUPANTS FISHED.  OPERATOR/OWNER NOTICED THE HULL WAS FULL OF WATER AND THE AUTO BILGE WAS NOT WORKING.  OCCUPANTS PULLED THE ANCHOR AND ATTEMPTED TO MAKE IT BACK TO THE MARINA.  THE MOTOR STALLED AT THIS POINT AND THE VESSEL CAPSIZED WHEN ONE OF THE OCCUPANTS STEPPED TO ONE SIDE.  OCCUPNATS WERE PICKED UP AND TAKEN TO THE LANDING WHERE THEY REFUSED MEDICAL.  ONE OF THE DRAIN SCUPPERS ON THE STARBOARD SIDE OF THE HULL WAS NOT DRAINING WHICH ALLOWED WATER TO FILL THE HULL.  THE MOTOR LIKELY SHUTDOWN DUE TO VOLTAGE LOSS FROM THE BATTERIES BEING SUBMERGED.