RedactedNarrative: A PWC WITH TWO OCCUPANTS LEFT FROM PIRATES COVE AROUND 1000 HOURS.  IT WAS HAVING PROBLEMS WITH THE ENGINE STALLING WHILE TRAVELING SOUTH FROM THE RIVER INTO THE NORTH BASIN.  APPROXIMAETLY 20 MINUTES LATER, THE ENGINE STALLED AGAIN, THEN DIED.  THE PWC STARTED TO TAKE ON WATER AND SINK.  operator ADVISED THAT THEY WERE HEADING SOUTH TOWARDS WINDSOR BEACH BETWEEM 10 AND 20 MILES PER HOUR WHEN IT FINALLY DIED.  The intake was cracked.