This is a list of ships of the line of the United States Navy. Because of the operating expense, a number of these were never launched. These ships were maintained on the stocks, sometimes for decades, in case of an urgent need.
USS America (given to France upon launching, 1782)
Unnamed class
Unnamed, Boston (canceled, 1778)
Unnamed, Philadelphia (abandoned with the capture of Philadelphia, 1777)
Unnamed, Poughkeepsie, New York (canceled, unknown date)
Columbus class
Columbus (canceled, 1800)
Unnamed, Boston Navy Yard (canceled, 1800)
Unnamed, New York Navy Yard (canceled, 1800)
Franklin (canceled, 1800)
Unnamed, Washington Navy Yard (canceled, 1800)
Unnamed, Norfolk Navy Yard (canceled, 1800)
Independence-classUSS Independence (1814–1912, razeed 1836)
USS Washington (1814–1843)
USS Franklin (1815–1852)
USS Columbus (1819–1861)
Chippewa-class
USS Chippewa (laid down 1815, never completed)
USS New Orleans (laid down 1815, never completed)
USS Pennsylvania (1837–1861)
Delaware-class
USS Delaware (1820–1861)
USS Vermont (1848–1901)
USS New Hampshire (launched as depot ship, 1864; training ship, 1892–1921)
USS Virginia (laid down 1822, never launched)
USS New York (laid down 1820; burnt on ways, 1861)
USS Ohio (1820–1861)
USS North Carolina (1820–1866)
Unnamed class
Not built, Boston Navy Yard (frames on hand, 1832; not built)
Not built, Boston Navy Yard (frames on hand, 1832; not built)
Not built, Norfolk Navy Yard (frames on hand, 1832; not built)
Not built, Norfolk Navy Yard (frames on hand, 1832; not built)
List of ships of the line of the United States Navy Wikipedia (Text) CC BY-SA