The Allaire Iron Works of New York supplied "Savannah"'s engine cylinder, while the rest of the engine components and running gear were manufactured by the Speedwell Ironworks of New Jersey. The 90-horsepower low-pressure engine was of the inclined direct-acting type, with a single cylinder and a 5-foot stroke. "Savannah"'s engine and machinery were unusually large for their time, and after the ship's launch, Moses Rogers had difficulty locating a suitable boiler, rejecting several before settling on a copper model by boiler specialist Daniel Dod. The ship's wrought-iron paddlewheels were 16 feet in diameter with eight buckets per wheel. For fuel, the vessel carried 75 tons of coal and 25 cords of wood.