RedactedNarrative: OPERATOR VESSEL 1 NOTICED THE VESSEL WAS SLOWLY GETTING WATER IN THE FLOOR.  OPERATOR TOOK VESSEL BACK TO THE PINE ISLAND COURTESY DOCK AND PUT IN IN A SLIP.  OPERATOR ATTEMPTED TO BAIL OUT THE WATER BUT COULD NOT KEEP UP WITH THE IN-FLOW.  THE VESSEL CAPSIZED IN THE SLIP.  TOW BOAT US REMOVED THE VESSEL FROM THE WATER AND FOUND A HOSE FROM THE LIVE WELL PUMP TO THE BACK OF THE VESSEL HAD COME LOOSE.  AREA OF THE ACCIDENT WAS APPROX 111 FEET NORTH OF THE SOUTH SHORE AND APPROX 212 FEET EAST OF THE WEST SHORE. AND IN THE 4TH SLIP WEST OF THE EAST END OF THE PINE ISLAND DOCKS.