<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Relevant discussion may be found on the talk page . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Relevant discussion may be found on the talk page . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> A steamboat is a boat that is propelled primarily by steam power, typically driving propellers or paddlewheels . Steamboats sometimes use the prefix designation SS, S.S. or S / S (for' Screw Steamer') or PS (for' Paddle Steamer'), however these designations are most often used for steamships . </P> <P> The term steamboat is used to refer to smaller, insular, steam - powered boats working on lakes and rivers, particularly riverboats . As using steam became more reliable, steam power became applied to larger, ocean - going vessels . </P>

How were steam-powered ships different from sail boats