RedactedNarrative: This boat accident investigation was started when the reporting source submitted an incomplete US Coast Guard form CG-3865 to this agency.  Only the first two(2) pages of the six(6) page Coast Guard form were completed.  The accident was never reported otherwise and the form was received on September 26th.  The phone number supplied did not answer, so an email was sent to the reporting source for a complete CG-3865 form.  A more complete form was received on September 30th, but I was still not able to contact the reporting source via phone for additional information.
  
  The collision occurred on August 28th 2016 at reported time of 4:00 pm.  Operator1 indicated he was in the process of turning toward the fuel dock at Selby Bay Marina when he struck the port stern of Vessel # 2, which was unoccupied and tied to dock in its slip next to the fuel dock.  Operator1 did not report the collision to this agency nor contact the other vessel's owner.  Operator1 did indicate he contacted the Selby Bay Marina owner, who may have also witnessed the collision  on the date it occurred.  Operator1' indicated the owner of the other vessel is a friend of Marina owner and he believed he would contact him and let him know about the incident.
  
  Operator1 did contact his insurance company Boat US and they had an appraiser, examine both vessels and provide an estimate that it would coast $3,105.18 to have the other vessel hauled out and repaired.  The damage consisting of hull, paint, safety railing and rub rail damage.  Operator1 indicated his vessel sustained only minor damage, which he plans to have repaired himself.  
  
  Owner2 was contacted at his home on November 8th.  Owner2 indicated he has never talked with Operator1 about this collision, but is in the process of having his boat repaired at Holiday Point Marina.  Owner2 did indicate that he learned of the collision from his friend Marina owner, but he related that it was several weeks after the incident.  The location of the collision was only learned after interviewing Owner2 at his home, I was unable to reach him by a publicly available phone number, no number or address was provided on the CG-3865 form submitted.
  
  At Selby Bay Marina on November 8th I also talked with the dock manager, who was able to confirm that Operator1 did talk with Marina owner about the collision.  Marina owner was not available to interview because he is out sick with pneumonia.  The dock maanger related that there is a sandy shoal not too far from the fuel dock which may have been the reason Operator1 made his turn so sharply.  Operator1 also keeps his boat at Selby Bay Marina.  Operator1' boat was also hauled out and at Holiday Point Marina when I examined it.
  
  At this point the cause of the collision is determined to be operator error, Operator1 was advised to make sure he contacts the owner's of other vessels or confirms that they were contacted.  
  
  Any additional information will follow in a supplement, all events occurred in Anne Arundel County.