RedactedNarrative: On March 22, 2020, at approximately 2:00 am Unit 1 was travelling back in the Charleston, SC harbor from offshore.  Unit 1, while navigating through the North and South Jetty entrance to the harbor, came in contact with the South Jetty rocks.  Operator of Unit 1 attempted to take off autopilot and make a corrected maneuver to avoid contact with the jetty rocks.