RedactedNarrative: Operator stated at the time of the incident he unintentionally grounded the vessel in north/west Ossabaw Sound.  He stated he could not back the vessel off of the sand bar and decided to wait until the tide came back in.  According to Operator when the tide came back in he still could not unground the vessel and the waves started pounded against the hull of the catamaran.  
  
  Operator stated the hull was breached on one side of the vessel.  A short time later the other hull was breached and the vessel started taking on water in both hulls.  He stated he called USCG and a USCG helicopter airlifted all 4 adults from the vessel.  USCG Sector Charleston confirmed their air asset  arrived on scene at 1928 hours.  Operator stated there were no injuries and the vessel was considered a total loss.  The vessel did not have registration and Operator had started the process of documenting the vessel with USCG.  However, he had not received the documentation number from USCG at the time of this incident.  
  
  The location where the vessel ran aground was well north of the established channel.  It is undetermined why the vessel was outside of the channel.  Operator advised he had only operated this type vessel for approximately 100 hours.  All the hours were in this catamaran.  
  
  The vessel was recovered by Sea Tow.  Sea Tow advised there were large breaches in the hull so it is likely contents within the vessel were lost or destroyed.  The mast and a dinghy with a 40 horsepower engine were not recovered. Sea Tow advised USCG Marine Safety Office is aware the mast was not recovered and believe it sank to the bottom.  On March 12, 2021 at 0910 hours, I confirmed this with USCG Sector Charleston.
  
  
  