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.
Paddle steamer
The first paddle-steamer to make a long ocean voyage crossing the Atlantic Ocean was , built in 1819 expressly for this service. "Savannah" set out for Liverpool on May 22, 1819, sighting Ireland after 23 days at sea. This was the first powered crossing of the Atlantic, although "Savannah" was built as a sailing ship with a steam auxiliary; she also carried a full rig of sail for when winds were favorable, being unable to complete the voyage under power alone. In 1822, Charles Napier's "Aaron Manby", the world's first iron ship, made the first direct steam crossing from London to Paris and the first seagoing voyage by an iron ship.
In 1838, , a fairly small steam packet built for the Cork to London route, became the first vessel to cross the Atlantic under sustained steam power, beating Isambard Kingdom Brunel's much larger by a day. "Great Western", however, was actually built for the transatlantic trade, and so had sufficient coal for the passage; "Sirius" had to burn furniture and other items after running out of coal. The "Great Western"’s more successful crossing began the regular sailing of powered vessels across the Atlantic. "Beaver" was the first coastal steamship to operate in the Pacific Northwest of North America. Paddle steamers helped open Japan to the Western World in the mid-19th century.
The largest paddle-steamer ever built was Brunel's , but it also had screw propulsion and sail rigging. It was 692 ft (211 m) long and weighed 32,000 tons, its paddle-wheels being 56 ft (17 m) in diameter.