The SS Savannah was an American hybrid sailing ship and sidewheel steamer constructed in 1818 at the New York shipyard of Fickett & Crockett. Designed initially as a sailing packet, the vessel was purchased before completion by Captain Moses Rogers, who supervised its conversion to incorporate an auxiliary steam engine and paddlewheels, in an effort to inaugurate the world's first transatlantic steamship service. The ship’s engine was a notable feature: a 90-horsepower, low-pressure inclined direct-acting engine with a 40-inch cylinder and a five-foot stroke, supplied by the Allaire Iron Works of New York, and complemented by large wrought-iron paddlewheels 16 feet in diameter with eight buckets per wheel. Savannah's machinery was large for its time, and the vessel carried 75 tons of coal and 25 cords of wood for fuel, primarily intended for use during calm weather when sails alone could not sustain adequate speed. The hull and rigging were constructed under the direction of Captain Stevens Rogers, with the ship rigged similarly to a typical sailing vessel but lacking royal masts and royals. Uniquely, Savannah was fitted with retractable paddlewheels, linked by chains and covered with canvas guards that could be folded or packed away within approximately 15 minutes, enabling the vessel to switch between steam and sail power efficiently. Launched in 1818, Savannah was equipped with luxurious accommodations, including 32 passenger berths, multiple salons, and spacious state rooms, giving her the appearance of a pleasure yacht. Her historic transatlantic voyage commenced on May 24, 1819, from Savannah, Georgia, heading towards Liverpool, England. The voyage was mainly under sail, with the engine used for about 80 hours out of nearly 200. Savannah was the first steamship to cross the Atlantic, arriving in Liverpool after 29 days. She subsequently traveled through the Baltic Sea to Stockholm and Kronstadt, where she was visited by European dignitaries, and her machinery was inspected with great interest. After her return to the United States in late 1819, Savannah’s engine was removed following her sale due to financial hardships caused by a fire in Savannah. The vessel then operated as a sailing packet until she ran aground and broke up off Long Island in 1821. Despite her limited commercial success, Savannah's pioneering voyage demonstrated the feasibility of steam-powered transoceanic travel, marking a significant milestone in maritime history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.