RedactedNarrative: EPO was dispatched to a boating accident in Wickford Harbor, No. Kingstown on 7-5-14. It was reported that 5 people were in the water and were removed by the No. Kingstown harbormaster and Safe Sea. Owner/operator her boat from NK with 4 other passengers on board. They attempted to go to Newport but seas were too rough so they headed back to No. Kingstown. While underway headed back, the engine stalled a few times and waves were breaking over the transom. Operator stated that the bilge pump was running constantly and finally quit. The boat was heavy with water and passenger as they slowly approached dock. As they advanced closer to the boat ramp the transom went under water and the boat quickly sank . EPO later inspected the hull and discovered poor maintenance repair on the drain plug hole and a loose drain plug. The plug hole was repaired with soft caulk and plastic pipe instead of bronze tube. Water was getting past the plug into the hull. Sinking was caused by weather, bilge pump failure, poor maintenance.