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Balancing myself on my hands, I drop into the hatch. My feet catch on a lip — the seat for another, i
The truth is often stranger than fiction. A return trip to the beach in November 2002, this time armed with a tape measure and a pad for making notes, gives me more than a basic understanding of the submarine. I e-mail photographs of it around the world to colleagues who study old submarines. No one can figure it out, though one researcher, Gene Canfield, says it looks similar to Intelligent Whale, a submarine built for the Union Navy during the Civil War but never finished. Could it be that old? I wonder as I continue to send out my queries. Then, in mid-2003, I get an answer from Rich Wills, who thinks it looks more like another long-forgotten Civil War submarine, the Sub Marine Explorer. No one knows what happened to that sub, Rich explains. After the war, it ended up in Panama, working for the Pacific Pearl Company, harvesting pearls from deep-water oyster beds.
I sit up and take notice. After all, the wreck lies in the Bay of Panama, in an island group known as the Pearl Archipelago. But is it really a Civil War submarine that vanished from the pages of history after 1869? Could a submarine survive, half submerged on a tropical beach, for more than 130 years? Rich sends me a copy of a 1902 article on pioneer submarines of the nineteenth century. It reproduces a profile plan of Sub Marine Explorer and gives its basic dimensions. As I look at it, I smile. The profile matches perfectly, down to the placement and size of the co
But how does Sub Marine Explorer fit into the history of submarine development? Built in 1865, what role did it play, if any, in the Civil War? And how does it compare with another recent discovery, the Confederate Civil War submarine H.I. Hunley? Found after years of hard work by Clive Cussler’s National Underwater and Marine Agency team and raised by the State of South Carolina, Hunley is one of the great archeological treasures of the Civil War, on a par with the ironclad USS Monitor, whose engine and turret have also been pulled from the depths. Even as I sit pondering the mysteries of Sub Marine Explorer, a team of archeologists is carefully excavating and dismantling Hunley to reveal its secrets. So for the answers on Sub Marine Explorer, I turn to Hunley project historian Mark Ragan. “There’s no one better,” Clive tells me as he reads Ragan’s number to me over the phone.
Mark answers his phone with a laconic drawl that quickens with excitement as I tell him what I’ve found on a Panamanian beach. I e-mail him a handful of photos, and as he opens them on his computer 3,000 miles away, I hear the subtle but sharp intake of his breath. That’s a good thing, because Clive is right. No one knows Civil War submarines better than Mark Ragan. He literally wrote the book on them, and he now turns his considerable energy and skill to dig deep into the archives to learn more about Sub Marine Explorer and its inventor, a forgotten American engineering genius named Julius H. Kroehl.
War spurs terrible and magnificent inventions, often taking ideas and concepts developed in peacetime and testing them hurriedly in times of crisis. During the Civil War, technology played a significant role. Among other i
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As for submarines, both sides embraced this new technology. Inventors proposed various underwater craft and built some that operated with various levels of success, killing their builders and crews on more than one occasion. A number of projects were launched, some in secrecy, others more publicly, leaving behind an unfortunately incomplete record of pioneer submarines and submariners. But the rediscovery of Julius Kroehl’s Sub Marine Explorer and a slow unraveling of his wartime career, buried in the National Archives, suggests that at every step of the way, as the Confederates developed both their “torpedoes” and submarines, Kroehl was there to develop something to counter them for the Union side. It may well be one of the last great untold stories of the Civil War.
Julius Kroehl was a German-born immigrant who came to America in 1838. He studied to become an engineer, and in 1845 he won a U.S patent for a flange-bending machine for ironwork. In 1856, he was well enough established to win a contract from New York City to build a cast-iron “fire watch tower” in Manhattan’s Mount Morris (now Marcus Garvey) Park. In an age before fire alarm boxes, volunteer fire fighters watched the city from towers, ringing a bell to sound the alarm.
But Kroehl’s real interests lay underwater. At the same time that he was engaged in his fire tower project, Kroehl and his business partner, Peter Husted, were contracted by the City of New York to remove part of Diamond Reef, near Governor’s Island in the East River, as it was a hazard to navigation. According to the Scientific American of August 5, 1856, “Messrs. Husted & Kroehl” were blasting to remove 6 feet of depth on the 300-foot reef. “Large tin canisters attached to the lower ends of strong pointed stakes, are sunk to rest on the face of the reef, and are discharged with a galvanic battery.” It was on this job that Kroehl became interested in diving. In 1858, Husted and Kroehl hired a new partner, Van Buren Ryerson, who had just built a pressurized diving bell that he called Submarine Explorer. Eight years later, Kroehl used the basic principle of Ryerson’s bell to build the world’s most sophisticated submarine.