In December, 1797, Fulton had interested his friend Barlow in a machine intended to drive “carcasses” of gunpowder under water. But his first experiments at exploding the gunpowder at a definite moment failed. Then he moved to Havre, where he would have greater opportunity to try out his torpedo-boats, as he christened them. His idea was that if his invention succeeded war would be made so dangerous that nations would be obliged to keep peace. Barlow was able to assist him with money until he had built and actually navigated some of his torpedoes along the coast. When he had satisfied himself, he wrote to the French government, the Directory, offering them his invention for use against their enemies.
The Directory was pleased with the offer, but the government was in so much of a turmoil that it was months before any positive action was taken. At length, on February 28, 1801, Fulton received word from Napoleon, the First Consul, to send his torpedo-boat against the English fleet. He set out; but the English fleet did not come his way, and he spent the summer vainly reconnoitering along the coast. To show the value of his invention he arranged to attack a sloop. This he described in his letter to the French Commission on Submarine Navigation. “To prove this experiment,” he wrote, “the Prefect Maritime and Admiral Villaret ordered a small Sloop of about 40 feet long to be anchored in the Road, on the 23rd of Thermidor. With a bomb containing about 20 pounds of powder I advanced to within 200 Metres, then taking my direction so as to pass near the Sloop, I struck her with the bomb in my passage. The explosion took place and the sloop was torn into atoms, in fact, nothing was left but the buye [buoy] and cable. And the concussion was so great that a column of Water, Smoke and fibres of the Sloop were cast from 80 to 100 feet in Air. This simple Experiment at once proved the effect of the Bomb Submarine to the satisfaction of all the Spectators.”
This exhibition took place in August, 1801, before a crowd of onlookers, and at once established the value of the torpedo. But, as he was unable to attack any English ships, the French government lost interest in his invention, and Napoleon’s scientific advisers reported to him that they regarded the young American as “a visionary.”
At the same time the British government awakened to the great possibilities of Fulton’s device. His old friend, Lord Stanhope, urged that suitable offers be made him. This was ultimately done, and in April, 1804, Fulton left France and returned to London. A contract was drawn up by which he was to put his torpedo at the service of the English government and receive in return two hundred pounds a month and one-half the value of all ships that might be destroyed by his invention.
This arrangement, however, was of short duration. A change of ministry dampened his hopes, and in 1806 the government declined to adopt his invention on his terms. At the same time they tried to suppress this new method of warfare, and to that end made him another offer. Fulton, always an ardent patriot, answered, “At all events, whatever may be your reward, I will never consent to let these inventions lie dormant should my Country at any time have need of them. Were you to grant me an annuity of £20,000 a year, I would sacrifice all to the safety & independence of my Country. But I hope that England and America will understand their mutual Interest too well to War with each other And I have no desire to Introduce my Engines into practice for the benefit of any other Nation.”
He was already eager to return home to work upon his long cherished plans for a steamboat. He continues, “As I am bound in honor to Mr. Livingston to put my steamboat in practice and such engine is of more immediate use to my Country than Submarine Navigation, I wish to devote some years to it and should the British Government allow me an annuity I should not only do justice to my friends but it would enable me to carry my steamboat and other plans into effect for the good of my Country.—It has never been my intention to hide these Inventions from the World on any consideration, on the contrary it has been my intention to make them public as soon as consistent with strict justice to all with whom I am concerned. For myself I have ever considered the interest of America [n] free commerce, the interest of mankind, the magnitude of the object in view and the rational reputation connected with it superior to all calculations of a pecuniary kind.”
Satisfactory terms of agreement were reached, and in 1806 Fulton was free and ready to return to that native land from which he had been away twenty years.
The building of a practicable steamboat had long been in his mind. He had corresponded on the subject with Chancellor Livingston, who had devoted much time and money to new inventions. Fulton, when in Paris, had experimented with models of steamboats, and had studied the records of what had already been done in that line. In 1802 he had started a course of calculations on the resistance of water, and the comparative advantages of the known means of propelling vessels. He had rejected the plan of using paddles or oars, and also of forcing water out of the stern of the vessel, and had retained the idea of the paddle-wheel. This he tried successfully on a small model that he built and used on a river that ran through the village of Plombières. He then built an experimental boat, sixty-six feet long and eight feet wide, and this he exhibited to a large audience of Parisians in August, 1803. His success led him to order certain parts of a steam-engine from the firm of Boulton and Watt in Birmingham, these to be shipped to America. Meantime Chancellor Livingston had obtained for himself and Fulton the exclusive right to navigate the waters of New York state by vessels propelled by fire or steam.
As soon as he reached America in December, 1806, Fulton started work on his boat. He engaged Charles Brownne, a ship-builder on the East River, to lay down the hull. He decided to name the vessel the Clermont, the name of Chancellor Livingston’s country-place on the Hudson, where Fulton had been a guest. The engine duly arrived from Birmingham and was carried to the shipyard. As a number of loafers and hangers-on about the docks threatened injury to “Fulton’s Folly,” as the building boat was called, he had to engage watchmen to guard his property. By August the boat was finished, and was moved by her own engine from the yards to the Jersey shore. She was one hundred and fifty feet long, thirteen feet wide, and drew two feet of water. Before she had gone a quarter of a mile both passengers and observers on the shore were satisfied that the steamboat was a thoroughly practicable vessel.