Interwar Years, 1818-1845
Promoted to lieutenant on 1 April 1818, Tattnall was assigned to the frigate Macedonian on 30 June, and he sailed in her for the Pacific in November. He was detached from Macedonian on 30 August 1820, and returned to the United States. Ordered to Norfolk on 26 December 1822, he joined Commodore David Porter's squadron in schooner Jackall. Lieutenant Tattnall served in the West Indies on an expedition to suppress piracy until he was detached on 4 May 1823. On 23 June 1824, Tattnall was ordered to Constitution for Mediterranean service. In March 1826, he transferred to Brandywine and returned home in her in May. On the 15th of that month, he was granted six months leave, which was later extended into 1828.
Tattnall served in Erie from October 1828 to August 1829 and then went on to survey the Tortugas until March 1830. Lt. Tattnall took command of schooner Grampus on 15 April 1831, and cruised the West Indies and the Gulf of Mexico. In August 1832, he captured the Mexican schooner, Montezuma, which had boarded and robbed an American ship on the high seas. He was detached from Grampus in September 1832 and went on leave awaiting orders for almost four years before being ordered in, July 1836, to recruit men for Captain Thomas ap Catesby Jones' survey and exploration expedition.
Tattnall was promoted to commander on 25 February 1836, and, in April, reported for a three-year tour of duty at the Boston Navy Yard.
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