The gunboat went to the northward and eastward of Nantucket during her cruise but, as her commanding officer reported, "obtained no information to justify a longer search for the piratical vessel."
Meanwhile, CSS Tallahassee had left Halifax, Nova Scotia, at 13:00 on 20 August, before any Federal warships could arrive, setting in motion a search.
Yantic later operated off the eastern seaboard between Hampton Roads and New York and, on 1 November, visited Halifax – a port swarming with "secessionists and other sympathizers" – to obtain information on the activities of CSS Olustee (as the Confederates had renamed Tallahassee).
On Christmas Day 1864, Yantic assisted in the debarking of the troops of General Benjamin Butler and covered the landing operations.
General Butler, however, "to the surprise and mortification of all" (as Harris later recounted), recalled the troops; and the landing operation ceased.
In the action – a bloody one in which the sailors and marines of the naval landing force charged on the run into withering Confederate gunfire and suffered accordingly grievous casualties in the frontal assault – Fort Fisher was finally taken on 15 January.
For the remainder of the Civil War, Yantic served on blockade duties, as part of the successful Union interdiction operation, preventing trade by sea with the Confederacy.
At other times during that Asiatic Squadron deployment, Yantic conducted a regular routine of cruises to ports ranging from Canton, Borneo, the Philippine Islands, and Hong Kong.
Subsequently, Yantic's crew took part in celebrations attending the unveiling of the statue of Admiral David G. Farragut in Washington, D.C., on 25 April 1881, before sailing later that spring to Mexican waters.
In June, at Progreso, Yucatán, she investigated the detention of the American bark Acacia before returning northward to familiar waters off the eastern seaboard of the United States.
Her hull is still buried in a filled-in boat slip in Gabriel Richard Park; her anchor sits in front of the Detroit Naval Armory.