USS Tyler was originally a merchant ship named A. O. Tyler, a commercial side-wheel steamboat with twin stacks and covered paddles positioned aft. Constructed in Cincinnati, Ohio in 1857, it was acquired by the United States Navy, 5 June 1861 for service in the American Civil War and converted into the gunboat USS Tyler on 5 June 1861. She was commissioned in September 1861. She was protected with thick wooden bulwarks.