RedactedNarrative: Vessel 1 began taking on water through a round access panel in engine well. A hole had been drilled in the access panel and a hose from an aftermarket bilge pump was run through the panel.  
  
  Occupant #1 noted he observed water entering the panel where the hose was added and the vessel quickly swamped as the bilge pump was overwhelmed. 
  
  All occupants were ejected from the vessel and the vessel capsized.  The vessel became quickly submerged and the occupants were quickly by a nearby vessel.