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Mystery of the Hunley

American Civil War Submarine

CSS Hunley

One night, over a hundred and forty years ago, a secret weapon named The Hunley became the first ever submarine to destroy an enemy ship. But, that night The Hunley also sank, with all her crew trapped inside. Since then she's remained on the ocean floor. Novelist and adventurer Clive Cussler and divers from his non-profit National Underwater and Marine Agency found the Hunley in 1995. Now, a team of scientists are planning to raise her from her watery grave.

Off the coast of Charleston, South Carolina a team of divers, engineers and scientists are preparing to raise the wreck of the Hunley from the ocean floor. They plan to, carefully, transport it to a laboratory, and open her up to find the remains of the crew inside.

On the 17th February 1864, at the height of the American Civil War, this weapon of the Confederate South, a hand-powered submarine armed with a spar-mounted torpedo successfully attacked and sank the Union warship USS Housatonic.

The recovery team kick-off their multi-million dollar operation by diving down and scouring every inch of the Hunley submarine on the ocean floor. They're looking for anything that might reveal how and why she sank and what happened to the men on board. Archaeologist Claire Peachy has discovered holes in the submarines hull which she think may have been caused by shotgun blasts from the Housatonic.

For centuries, inventors have been trying to take war underwater. As far back as the late 1400s, Leonardo da Vinci had sketched a submersible ship. In the 1600s, a Dutch inventor built an underwater vessel to sell to the British; it never saw battle. The turtle, launched in 1776 by the Americans against the British, was a failure.

The recovery plan is to sink two giant piles into the sea bed, lower a truss on top of them and run 33 slings under the sub. Divers will fill synthetic rubber bags, between the slings and the hull, with expanding foam creating a padded hammock. When the hull is safely cradled they hope to lift it smoothly to the surface. The team has doubts about the Hunley's hull integrity which is held together by rusted rivets. The danger is that as she's lifted, sediment inside her shifts and the rivets fail.

Claire attemps to Squeeze into a mock-up of the Hull

The team's first exploration of the wreck have given them some idea of how cramped it was on the sub. At five feet five inches tall. roughly the height of the average civil war soldier, archaeologist Claire Peachy barely firs inside the hull.

The Hunley was inspired by Horace L. Hunley, an Alabama sugar planter and engineer to come up with the concept of turning some boiler tube into a submarine. Through a series of trial and error experiment, he came up with the Hunley. His ingenious brainchild is a simple, small vessel. Just 40 feet long, 4 feet wide with a beam of only 3 feet. She was hand-powered through the water at only 4 knots. The crew squeezed through two tiny hatches to get onboard. When submerged, their only air supply was the air sealed in with them.  Their only light came from a single candle and when it died the crew knew that their oxygen was running out. The Hunley submerged by taking water into two ballast tanks and rose by pumping it out.

The team have made history, the Hunley is the largest iron vessel ever raised from the sea bed. They transport her to a specials conservation lab where she's kept in fresh water to maintain her condition. Now, archaeologists hope that her contents will reveal why she sank and who was on board. They want to preserve her condition, so it will take nearly a year for the full excavation to be completed.

As the investigators explore the sub's interior, they begin finding the remains of the crew. Preserved by the mud, these bones will provide the best leads to their identities. The investigators also want to find out more about how the Hunley operated. The submarine may have been built from an iron boiler but, for her era, it seemed that her design and structure were extremely sophisticated. Maria Jacobsen, archaeologist, thinks that the Hunley used balance tanks and dive planes to surface and submerge. The steering system is much more sophisticated than Maria expected. Dixon used a kind of joystick to manoeuvre. A linkage connected the joystick to the rudder and a flywhel was attached to the propeller to increase the efficiency of the crankshaft. The Hunley was propelled by a system of hand-cranking which, in the days before nuclear engines, was the stealthiest form of propulsion.

The Hunley Surfaces for the First Time in 140 Years

The Hunley had already sunk twice, killing men from earlier crews. The second sinking took the life of the submarine's financier; Horace Hunley. When the Hunley was recovered after her second, failed mission, the crew inside were found contorted, some clutching candles. The desperation of their final minutes was recorded with the dead men's gruesome remains. Around Charleston, the Hunley became known as 'The Murdering Machine'. So, what drove  new crew to climb inside the Hunley and take her on what would be her final mission?

These men were not deterred by the Hunley's previous sinkings, the Hunley was the best weapon the Confederates had against the Union blockade. It was considered an honour to volunteer, so George Dixon had no difficulty recruiting a new crew. They practised and prepared for the big day  and, against all odds, on Feb 17th 1864 the Hunley and her crew set out to strike a blow for the South and change the course of the American Civil War.

Dixon and his crew set their sights on the USS Housatonic and cranked with all their might towards their unsuspecting prey. Three miles out, they surfaced and spotting their target only 200 yards away; they charged. Lookouts on the Housatonic raised the alarm, peppering the sub with small arms fire, but it was too late. The Hunley drove her torpedo home, the Housatonic sank in less than five minutes. The Hunley had become the first submarine, in history, to sink an enemy ship.

A Confederate sentry on shore saw a blue lantern at sea, the Hunley's signal for success. But, it was to be the last sighting of the pioneering submarine. This signal would appear to suggest that the Hunley was afloat after the explosion, so hadn't been caught in the blast.

Forensic Genealogist, Linda Abrams is trying to identify the crew. She spent three years with archaeological and forensic data, census records and DNA results and has compiled a fairly accurate list of who the crewmen were. Surprisingly, half of them were Europeans who may have been migrant workers or mercenaries. The truth will never be known.

 

Crew Posn Name Age Origin
1 Lt. George Dixon 25 Ohio (?)
2 Arnold Becker 19 Germany
3 Simkins / Lumkin 42 Europe
4 Frank Collins ? ?
5 Corp. J. F. Carlsen 22 Norway
6 Miller 45 Europe
7 James Wicks 40 North Carolina
8 Joseph Ridgaway 30 Maryland

 

The loss of the Hunley is still a mystery, the best explanation is that the crew suffocated after heavy seas prevented then surfacing to replenish their air supply. There was no evidence of panic or struggle which would be expected in a drowning