If a steam engine could power a loom or turn a lathe then it could move a boat, which was an advantage when the air was calm or the river too narrow. Oliver Evans built his Oruktor Amphibolos in 1805. The first steamboat on the Mississippi River was the New Orleans in 1811. The technology was resilient. The African Queen with her Brady steam engine, christened the Livingstone, was built in 1912 in Lancashire and is supposedly still in operation today in Key Largo, Florida.