order to get them to agree to the treaty. About 22 June 1854, he arranged another peace treaty, between the leaders of Grahway and Half Cavally. On 31 July 1854, he arranged a compact with the King of Lagos. Constitution took the American ship H.N. Gambrill as a prize near Angola on 3 November. Gambrill was involved in the slave trade and proved to be Constitution's final capture. The rest of her tour passed uneventfully and she sailed for home on 31 March 1855. She was diverted to Havana, Cuba, arriving there on 16 May and departing on the 24th. She arrived at Portsmouth Navy Yard and was decommissioned on 14 June, ending her last duty on the front lines. Civil War Since the formation of the US Naval Academy in 1845, there had been a growing need for quarters in which to house the students (midshipmen). In 1857, Constitution was moved to dry dock at the Portsmouth Navy Yard for conversion into a training ship. Some of the earliest known photographs of her were taken during this refitting, which added classrooms on her spar and gun decks and reduced her armament to only 16 guns. Her rating was changed to a "2nd rate ship". She was recommissioned on 1 August 1860 and moved from Portsmouth to the Naval Academy. At the outbreak of the Civil War in April 1861, Constitution was ordered to relocate farther north after threats had been made against her by Confederate sympathizers. Several companies of Massachusetts volunteer soldiers were stationed aboard for her protection. towed her to New York City, where she arrived on 29 April. She was subsequently relocated, along with the Naval Academy, to Fort Adams in Newport, Rhode Island, for the duration of the war. Her sister ship United States was abandoned by the Union and then captured by Confederate forces at the Gosport Shipyard, leaving Constitution the only remaining frigate of the original six. The Navy launched an ironclad on 10 May 1862 as part of the South Atlantic Blockading Squadron, and they bestowed on her the name to honor Constitutions tradition of service. However, New Ironsides naval career was short, as she was destroyed by fire on 16 December 1865. In August 1865, Constitution moved back to Annapolis, along with the rest of the Naval Academy. During the voyage, she was allowed to drop her tow lines from the tug