RedactedNarrative: Prior to the accident 3 people were picked up from the launch boat and brought back to Yacht Club.  They heard a loud bang and someone said I think your boat was hit.  
  
  They went back to the vessel and there was a boat 18-24 ft boat near their vessel that claimed there was no damage to vessel #1.  They left scene and did not have lights on and did not provide any information.