June 20 - 1819 - The SS Savannah Arrives in Liverpool
 
The idea behind the SS Savannah was that it would bring notoriety with an historic trip across the Atlantic as the first steam powered vessel to make a transatlantic crossing. Or that's how it's Captain, Moses Rogers, convinced its owners, Scarborough & Isaacs, to install a steam engine and a paddle wheel on the ship while it was being built. This hybrid ship was so exciting that even President James Monroe wanted to take a trip on it. Finally, it left home port at Savannah, Georgia in March of 1819 under steam power. Quickly, it would return to sail, but otherwise the Savannah made history by uneventfully reaching Liverpool, England.

Which is What Happened Today, June 20, in 1819.