RedactedNarrative: Operator stated that on July 1, 2016 he was fishing with occupant.  The lights on the vessel were not working so they decided to go home about 18:30.  At about 18:45 the vessel was being operated at a speed of 25-30mph in the channel between Henderson Island and Terry Point Subdivision (Doc Terry Rd).  At this time the vessel began to take on water. Operator and Occupant both stated that they were unaware of when or where they struck the object.  He was able to get the boat to shoreline property.  Operator stated that the transom was under water by the time he beached the boat.  I received a message from dispatch between 21:00 and 21:15 about the incident.  When I arrived on the scene Operator had his vehicle there and the vessel on the trailer.  There was a break in the fiberglass on the starboard side near the keel at the rear of the vessel.  The break was 2-3 feet long (see attached photos).