The Spread Eagle was a steam-driven sidewheel riverboat that transported passengers, goods and supplies to the forts and trading posts along the Missouri River between 1857–1864. It was constructed and launched at Brownsville, Pennsylvania. The vessel was a wooden hull packet, 210 feet (64 m) long, with a beam of 36 feet (11 m), a draft of 6 feet (1.8 m), and was rated at 389 tons.[1] It was powered by two steam engines with 3 boilers each, at 40 inches (1,000 mm) in diameter and 24 feet (7.3 m) in length. The Spread Eagle was constructed by Captain Benjamin Johnson who sold the vessel to the American Fur Company upon her arrival at Saint Louis, Missouri. Commanded by captain Bailey, she was once engaged in a race along the Missouri from St. Louis to Fort Benton where she rammed her opponent.[2][3]