Steamboat
Similar boats were made in 1785 by John Fitch in Philadelphia and William Symington in Dumfries, Scotland. Fitch successfully trialled his boat in 1787, and in 1788, he began operating a regular commercial service along the Delaware River between Philadelphia and Burlington, New Jersey, carrying as many as 30 passengers. This boat could typically make and travelled more than during its short length of service. The Fitch steamboat was not a commercial success, as this travel route was adequately covered by relatively good wagon roads. The following year, a second boat made excursions, and in 1790, a third boat ran a series of trials on the Delaware River before patent disputes dissuaded Fitch from continuing.
Steamboats of the Mississippi
Compression ignition or diesel engines were first used about 1910 for smaller sternwheel towboats, but did not gain ascendancy until the late 1930s, when diesel-powered propeller boats appeared. The introduction of screw propellers to the rivers came late because of their vulnerability to damage and the greater depth of water required for efficient operation. The Federal Barge Lines experiment was successful in restarting the river transportation industry.