RedactedNarrative: THIS CRASH OCCURRED AS VESSEL ONE SUFFERED A MECHANICAL FAILURE, CAUSING WATER TO BE PUMPED INTO THE HULL OF VESSEL ONE. VESSEL ONE THEN SANK.
  
  OCCUPANTS WERE STILL ABOARD VESSEL WHEN OFFICER ARRIVED.  ALL OCCUPANTS BOARDED PATROL VESSEL.
  
  OPERATOR 1 ADVISED THE VESSEL WAS JUST IN THE MAINTENANCE SHOP AND WAS RETURNED TO THEM ON 9/5/2020.  BOTH OWNER AND OPERATOR 1 STATED THEY FELT LIKE THE VESSEL WAS BECOMING VERY SLUGGISH AND UNDERPOWERED.  THE OWNER STATED HE THINKS THE WATER COOLANT LINE BROKE AND IT BEGAN TO FILL THE VESSEL'S HULL.