Final answer:
The Navy's first successful steam ship was the USS Fulton, developed by Robert Fulton in 1807.
Step-by-step explanation:
The Navy's first successful steam ship was the USS Fulton. Robert Fulton was the first to successfully develop a steamship in the United States, completing the construction of a 146-foot steamboat in 1807. This steamboat, powered by a 24 horse-power Boulton and Watt engine, transported passengers and cargo between New York City and Albany much more quickly than a sail-powered boat could. The steamboat service became very profitable for Fulton and his financial backer, Robert Livingston.