the secretary of the navy assigned the tug to the south atlantic blockading squadron; but she was kept in the delaware river performing towing duties, and did not join her squadron until she reached port royal, south carolina, on 6 august. she was assigned to the inner cordon of the forces blockading charleston, south carolina; but for occasional runs back to port royal to carry passengers and dispatches and to receive repairs, she served off that port through the end of the civil war.