Robert Fulton (November 14, 1765 – February 24, 1815) is an American engineer and inventor who is widely credited with developing the first commercially successful steamboat.
In 1800, he is commissioned by Napoleon Bonaparte to design the Nautilus, which is the first practical submarine in history.
He is also credited with inventing some of the world's earliest naval torpedoes for use by the British Navy.
Fulton becomes interested in steamboats in 1777 when he visits William Henry of Lancaster, Pennsylvania, who had earlier learned about James Watt's steam engine on a visit to England.