In the 19th century, many steamships crossed the Atlantic.
An old steamboat is on display at this port.
蒸気船 is the more technical, literal term for a steam-powered vessel, while 汽船 is the everyday word used for the same kind of ship.
Standard kanji spelling.
Variant using 汽 instead of 気; less common.
Compound of 蒸気 (steam) and 船 (ship).