Maryland was built by public subscription in Baltimore under the Act of 30 June 1798; launched at Price Shipyard, Baltimore, 3 June 1799; and accepted by the Navy in August 1799, Captain John Rodgers in command.
Maryland departed Baltimore 13 September 1799 for the Surinam station. Arriving 1 October, the sloop cruised from French Guiana to Curaçao protecting American shipping from attacks by French warships and privateers. The Napoleonic Wars were ongoing in Europe and the French were searching and seizing merchant vessels trading with the British West Indies, causing much loss to American commerce. Maryland captured the schoonerClarissa, an American slave trader without papers 4 January 1800, and then on 26 July fell in with and recaptured without a fight the Portuguese brigGloria da Mar, which had been captured by French privateer Cherry of Bourdeaux 13 days previous.[1]
The sloop left Surinam for home 9 August 1800, having served since December 1799 as the only American naval vessel on the Surinam station. Sometime before 30 August she recaptured Portuguese brig "Gloria du Mar" that had been captured by the French.[2] Sailing by way of St. Kitts, and St. Thomas, Maryland escorted a large convoy of American and British merchant vessels to safe waters, in addition to capturing Aerial, an American merchantman on 2 September. "Arial" had been trading with the enemy and arraigned a fake capture by a privateer as cover.[3] On 10 September 1800 she set sail for St. Thomas, Virgin Islands, with USS Eagle, escorting a convoy of 52 ships. On unknown date she and USS Maryland recaptured brig "Mahitable".[4]
Maryland arrived at Baltimore on 1 October for repairs. In a letter dated 20 February to Josiah Parker, Chaiman of the Committee on Naval Affairs, Navy Secretary Stoddert recommended selling her.[5] The sloop departed Baltimore on 22 March 1801 with Congressman John Dawson of Virginia, President Adams' designated bearer of the amended and ratified Treaty of Mortefontaine with France, and arrived Havre de Grâce, France, in early May. The sloop remained until 15 July, when, because of difficulties in obtaining ratification, she was released by Congressman Dawson and sent home. Carrying several diplomatic passengers and important letters and dispatches, she returned to her home port Baltimore 28 August. Captain Rodgers discharged the crew and then sold Maryland on 2 October 1801 for $20,200.[6]