What was the first iron vessel to go to sea?
"Aaron Manby" was a landmark vessel in the science of shipbuilding as the first iron steamship to go to sea. She was built by Aaron Manby (1776–1850) at the Horseley Ironworks. She made the voyage to Paris in June, 1822, under Captain (later Admiral) Charles Napier, with Aaron's son, Charles, on board as engineer. "Aaron Manby" was then used by the "Compagnie des bateaux a vapeur en fer" to operate its service between Paris and Havre.