“What about some of the other theories, Mr. Verne?” another reporter called out. “What about this business that it’s a floating island of some sort or maybe even a submarine boat?”
Verne chuckled. “Well, there have been quite a number of theories proposed, true, but I prefer to deal with rational scientific inquiry rather than wild speculation. Islands do not float. Rock and earth cannot float in water. Islands are simply the projecting tips of submerged land masses or mountains, if you will. Someone, as I recall, suggested that we could be confronted with the floating hull of some enormous wreck. While this may sound somewhat plausible upon the surface, this theory collapses under careful scrutiny. What would provide the motive power for this floating hull that would enable it to act in the manner described in the various sightings? Moreover, what would keep this hull afloat, if it were, indeed, a wreck?
“As to the question of a submarine boat, I must admit to being personally quite intrigued by such a possibility. However, keep in mind that a submarine vessel of such enormous power could hardly remain secret against inquiries made both here and abroad. That a private gentleman should have such a machine at his command, while smacking of romance, is certainly quite unlikely. Where, when, and how could it have been constructed? And how could its construction, ambitious an undertaking as it would have to be, be kept a secret? It is possible a government might possess such a destructive machine; however, it is quite unlikely in view of what we know of submarine boats coupled with the technological capabilities we have.
“Not to dismiss your question out of hand, sir,” Verne continued, “consider the history of the so-called submersible boat. Alexander the Great is said to have had himself lowered into the sea while encased in a barrel of glass. Leonardo da Vinci also experimented with the idea of an undersea craft. In the 16th century, an English carpenter named William Bourne designed a submersible boat, but was unable to provide it with any means of propulsion. Drebbel likewise constructed several watertight boats capable of being submerged and propelled by means of oars, with air supplied by tubes reaching to the surface. Not a very practical device. The first real step in the development of submarine boats occurred during your American Revolution, when Colonel David Bushnell built his Turtle, which rather resembled two large turtle shells joined together. Propulsion was achieved by means of a crude hand crank, which turned a propellor. It was quite an ambitious device.
“In order to submerge, the vessel’s lone crewman operated a valve which would let water into a ballast tank. To reverse the procedure, the water was pumped out. A pair of brass tubes admitted fresh air into the vessel and, upon submergence, these tubes were closed with cork valves. That would leave enough air inside to allow for a submerged period of some thirty minutes. The purpose of the vessel was to approach British ships unseen and attach an explosive device to their hulls by means of a screw device. However, the Turtle never succeeded in its task, was slow and crude in the extreme and subject to navigational problems due to the effect of currents. Now this was the first practical submarine boat for which any record exists. The second was also built by an American, your Mr. Robert Fulton, of steamboat fame.
“In 1800, he designed and built the Nautilus, expanding upon the same basic principles developed by Bushnell. He was unable to gain support in the United States, so he came to my country and tried to interest Napoleon in his vessel. He was given some funds, with which he managed to stage a demonstration in which he successfully sank a wreck placed at his disposal. However, Napoleon branded it a dishonorable device and, fearing that Napoleon intended to steal the Nautilus, Fulton destroyed it. He then tried to interest England. He failed there, as well. At that point, he apparently gave up in disgust and returned here to build his famous Clermont.
“The most recent use of submarine vehicles was also in your country, during the recent war among your states. Doubtless, you gentlemen will recall the story of the Hunley, a Confederate craft some forty feet long and four feet in the beam. Its propulsion was provided by eight men, sitting side-by-side and operating a sort of crankshaft which turned a screw propellor. I believe it was on the seventeenth of February, in 1864, that the Hunley managed to sink the Housatonic in Charleston Harbor by means of a gunpowder torpedo on the end of a long pole. Given the nature of the craft, the attack had to be made with the hatch open so visibility would be possible. As a result, the Hunley was swamped when the torpedo exploded and it sank with all hands. To that extent, it is somewhat debatable as to whether or not this was a successful attack and even whether or not it can properly be called a submarine attack.
“Now, gentlemen, the Hunley went down a mere two years ago. Are we to believe it is within the realm of possibility for science to have progressed so far as to enable, in two years, a submarine boat to be constructed which is capable of remaining submerged indefinitely and of attaining the sort of speeds reported in the sightings? Even if we were to accept such an astonishing development, well then, how would this submarine be able to resupply itself? What fantastic method of propulsion could it employ to attain such enormous motive power? How could it hope to attack other ships without risking damage to itself? How could its crew survive such long periods of submersion, even given the ability of storing oxygen in some manner which would enable such submersion, without being poisoned by the gases of their own exhalations? No, gentlemen, glamorous though the idea might be, it is quite ludicrous when examined from a practical standpoint. The technology simply does not exist which would allow for the construction of such a craft. That smacks of the sort of fantasy disreputable novelists such as myself indulge in.” He smiled. “What we are concerned with here is a scientific expedition, not one of my voyages extraordinaire. Although, I must confess, I find the idea of a submarine boat constructed by means of some sort of super science to be quite appealing. I may even write about it someday. However, it’s all nonsense, I assure you.”
They addressed him as Professor once again when they thanked him for his statements and Verne slowly shook his head as he watched them rush off to file their stories.
“Newspapermen,” he mumbled to himself. “Doubtless, they’ll get everything all wrong, as usual, and confer a doctorate upon me to validate their stories.”
He went on board the frigate and one of the sailors conducted him to the presence of the ship’s captain, a tall and handsome officer with ramrod straight posture and a no-nonsense manner.