Metacomet was built at New York City. She was chartered by the Navy in 1858 for use in the Paraguay expedition at monthly rate of $3,500, with an option to purchase her for $50,000. During the expedition she was commanded by Lieutenant William H. Macomb. In March 1859 she was deemed unseaworthy and not in a position to be navigated back to the United States.[1]
Subsequently purchased and renamed USS Pulaski, she operated in South American waters from early 1859 until 22 January 1863, when she was decommissioned and sold by auction at Montevideo, Uruguay. In the first months of 1865 she was purchased by Paraguay.[2] Until about 1870 she operated on the Río de la Plata as a civilian vessel.