RedactedNarrative: Operator told me he was cruising at 20 mph heading west on the Rappahannock River. He was about 100 yards from the south shore in about 2-3 feet of water. The location was west of the mouth of meachums creek near the sand bar that separates the creek from the main river. Operator said he saw something submerged in the water that looked like a well curbing. He didn't have time to maneuver the boat to miss the object so he kept straight hoping the boat would go over it and not hit. The boat struck the object near the rear of the hull causing a hole in the hull of the boat. Operator turned on the bilge pump and headed to shore and beached the boat.