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The first submarine in history to sink an enemy warship is upright for the first time in almost 150 years, revealing a side of its hull not seen since it sank off the South Carolina coast during the Civil War. Workers at a conservation lab finished the painstaking, two-day job of rotating the hand-cranked H.L. Hunley upright late Thursday.
The Hunley was resting on its side at a 45-degree angle on the bottom of the Atlantic when it was raised in August 2000 and scientists had kept it in slings in that position in the lab for the past 11 years. But they needed to turn it upright to continue with the job of conservation. Scientists hope the hidden side of the sub will provide clues as to why the Hunley sank with its eight-member crew in February, 1864, after sending the Union blockade ship Houstonic to the bottom. While there was no immediate clue from a first look at the hidden hull but "we are seeing some tantalizing clues on that side," Hunley archaeologist Maria Jacobsen said Friday.
Scientists knew there were large hull breaches on the starboard side that remained out of view all these years. Jacobsen said the area around the holes is smooth, as the sediment that has hardened on the hull was blasted away. It's not clear whether the breaches are manmade — caused by an explosion or the like — or simply caused by nature. She said it likely could have been scoured away by water and tides. "We may be dealing with nature here. How can these massive hull breaches occur?" she asked.
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"It's as if you are looking at the submarine for the first time," agreed conservator Paul Mardikian. "Before it was more like a mass of inert metal. Now it looks like something that had a life." The next step in conserving the Hunley comes next week when it will be lowered onto keel blocks to hold it upright. It will probably be a month before a truss and the slings that suspended the sub from it will be removed, providing an even better view of the submarine.
The delicate process of righting the sub involved rotating it between 800 and 1,000 millimeters. A team of workers adjusted the slings by 2 millimeter increments during the two days the job took. "It went better than it had any right to do," said Mike Drews, the director of the conservation center. "Knowing there were unknowns, we always erred on the side of caution."
Text and Top Image Source: Associated Press, June 24, 2011
1 comment:
Very good news and a great blog. Thanks, Tim.
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