thumb|right|USS Pennsylvania
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.
Continental Navy
- (given to France upon launching, 1782)
- Unnamed class
- Unnamed, Boston (canceled, 1778)
- (laid down 1815, never completed)