The first Princeton was the first screw steam warship in the United States Navy. She was launched in 1843, decommissioned in 1847, and broken up in 1849.The Princeton's reputation in the Navy never recovered from a devastating incident early in her service. On February 28, 1844, during a Potomac River pleasure cruise and demonstration of her two heavy guns for dignitaries, one of the guns exploded and killed Secretary of State Abel P. Upshur, Secretary of the Navy Thomas Gilmer, and other high-ranking U.S. federal officials. President John Tyler barely escaped death in the incident.Ship historyPrinceton was laid down on 20 October 1842 at the Philadelphia Navy Yard as a 700 long tons (710 t) corvette. The designer of the ship and main supervisor of construction was the Swedish inventor John Ericsson, who later designed the Monitor. The construction was partly supervised by Captain Robert F. Stockton who had secured the political support for the construction of the ship. The ship was named after Princeton, New Jersey, site of an American victory in the Revolution and hometown of the prominent Stockton family. The ship was launched on September 5, 1843 and ordered commissioned on September 9, 1843, with Captain Stockton in command.Her two vibrating lever engines were built by Merrick & Towne, Philadelphia, Pennsylvania and designed by John Ericsson. They burned hard coal and drove a six-bladed screw 14 ft (4.3 m) in diameter. The engine was small enough to be below waterline. Ericsson also designed the ship's collapsible funnel, an improved range-finder, and improved recoil systems for the main guns.Princeton made a trial trip in the Delaware River on October 12. She departed Philadelphia on October 17 for a sea trial, proceeded to New York, where she engaged in a speed contest with the British steamer SS Great Western, besting her handily, and thence returned to Philadelphia on October 20 to finish outfitting. On November 22, Capt. Stockton reported "Princeton will be ready for sea in a week." On November 28, he dressed ship and received visitors on board for inspection. On November 30, she towed Raritan down the Delaware and later returned to the Philadelphia Navy Yard. Princeton sailed on January 1, 1844 for New York, where she received her two big guns, named Peacemaker and Oregon.[edit] The gunsThe "Oregon," originally named "The Orator," was a 12 in (300 mm) smooth bore muzzle loader (ML) made out of wrought iron and was capable of firing a 225 lb (102 kg) shot 5 mi (8.0 km) using a 50 lb (23 kg) charge. It was designed by Ericsson and manufactured in England at the Mersey Iron Works and shipped to the U.S. in 1841. The design was revolutionary in that it used the "built-up construction" of placing red-hot iron hoops around the breech-end of the weapon, which pre-tensioned the gun and greatly increased the charge the breech could withstand.The "Peacemaker" was another 12 in (300 mm) muzzle loader made by Hogg and Delamater of New York City, under the designs and direction of Capt. Stockton. Attempting to copy the Oregon, but not understanding the importance of Ericsson's hoop construction, Stockton instead heavily reinforced it at the breech simply by making the metal of the gun thicker, ending up with a weight of more than 27,000 lb (12,000 kg). This produced a gun that had the typical weakness of a wrought iron gun, the breech being unable to withstand the transverse forces of the charge. This meant it was almost certain to burst at some point. Stockton only allowed for a few test charges before putting it aboard Princeton.Princeton was sent to Washington, D.C. in late January 1844, arriving on February 13. Washingtonians displayed great interest in the ship and her guns. She made trial trips with passengers on board down the Potomac River on February 16, 18, and 20, during which the Peacemaker was fired several times.[edit] Peacemaker accidentMain article: USS Princeton Disaster of 1844Contemporary lithograph depicting the explosionOn February 28, she departed Alexandria, Virginia on a pleasure and demonstration cruise down the Potomac with President John Tyler, his Cabinet, former first lady Dolley Madison, and approximately four hundred guests on board. The guests viewed the firing of the ship's guns and then retired below decks for lunch and refreshments. When they were summoned once more to view another test firing, the firing of Stockton's Peacemaker caused the gun to burst, sending shrapnel into the crowd. Instantly killed were Secretary Upshur, Secretary Gilmer, Capt. Beverly Kennon, who was Chief of the Bureau of Construction, Equipment and Repairs, Virgil Maxcy of Maryland, who had served as Chargé d'Affaires to Belgium from 1837 to 1842, Colonel David Gardiner of New York, the father of Julia Gardiner (who afterwards became the President's fiancée), the President's valet, a black slave named Armistead, and two sailors. It also injured about 20 people, including Capt. Stockton.[1] When Julia Gardiner, who was aboard, found out her father had died in the explosion she fainted into President Tyler's arms.[citation needed][edit] Later historyDuring construction and in the years following, Stockton attempted to claim complete credit for the design and construction of Princeton. Although it is true he was a strong advocate of the ship and certainly helped bring it into existence, the engineering genius was mostly Ericsson's. A Court of Inquiry investigating the cause of the explosion exonerated Capt. Stockton due to his political influence[citation needed] (he supported Tyler's campaign), blaming the explosion on Ericsson (despite the fact Ericsson had nothing to do with the design of the Peacemaker gun)[citation needed], and "bad luck". As a result of his shameful treatment, Ericsson developed a long-lasting mistrust of the US Navy.[citation needed]Princeton was employed with the Home Squadron from 1845-1847. She later served in the Mediterranean from 17 August 1847-24 June 1849. Upon her return from Europe she was surveyed and her timbers were found to be rotten. She was condemned to be broken up at the Boston Navy Yard on 17 July . Two years later, her engines were used in constructing a new Princeton. The ship's bell is on display outside Princeton's borough hall.