Initially the Boxer was used to defend Portland harbor. After the war, she became a merchant ship for several years. The HMS Boxer evidently did not become the USS Boxer as a commissioned U.S. ship. There was another USS Boxer, a 14-gun brig constructed by C, and D. Churchill of Middleton, Connecticut and commissioned in 185 under Lt. John Porter.)
Her first voyage as one was in April 1815, under Captain William McLellan, Jr. (1776-1844). She sailed to Havana, New York, Cadiz, Gibraltar, Marseilles and back to New York before returning to Portland in early 1816.
Subsequent shorter cruises under McLellan, Hall or William Merrill took her along the coast or to the West Indies.
Around 1818, William Merrill sold her to a Portuguese firm that used her as a mail packet between Portuguese Cape Verde and Lisbon.
Merrill reported in 1825, that he passed the Boxer leaving Praia at dusk as he entered the harbor as he entered the harbor on his vessel, the John, .
It is thought that the Boxer was eventually lost off the coast of Brazil.
--Brock-Perry