(Also see "Forensic Team Studying Skeletons of Hunley Crew.")Five years after the Hunley wreck's discovery in 1995, conservators raised the sub using a special steel truss that was removed only weeks ago."No one alive has ever seen the Hunley complete," said engineer John King on January 12 as a crane lifted the truss at Clemson University's Warren Lasch Conservation Center in North Charleston, Reuters reported on January 13."We're going to see it today. Within minutes the sub itself sank too-killing its eight-man crew and creating an enduring mystery. Housatonic in February 1864, the first American submarine to sink an enemy ship. Since 2000, conservators have worked tirelessly to reveal the doomed subs secrets. Shown in a South Carolina conservation facility, the Hunley sank the U.S.S. Hunley sank in 1864 and wasnt seen again until 1995. Hunley-the world's first submarine to sink an enemy ship-was revealed on January 12 (pictured) after 11 years of conservation work. On 17 February 1864, after months of practice runs and weather delays, the Confederate submarine, under cover of darkness, silently approached USS Housatonic, a 16-gun, 1,240-ton sloop-of-war, on. The finite element analysis provides conservators with a theoretical framework to assess the impact that rotation of the hull’s original orientation might have on its overall structural integrity and provides a basis for conservation-related decisions.For the first time since the U.S. In particular, the exact degree of deterioration and the heterogeneous nature of the corrosion create uncertainty in identifying material properties. The dive team was part of an expedition that was partially funded by NUMA and/or Cussler. In 1995 a dive team,consisting in part of Ralph Wilbanks, dug up the wreck of the Hunley and photographed it. Although finite element analysis is commonly used for structural analysis in many fields of engineering, its application to a historical structure such as the H.L. NUMA is a non-profit organization that was named for a fictional government agency in Clive Cussler’s novels. Data for the numerical model was obtained from archaeological documentation, as well as analytical data from non-destructive evaluation and metallurgical studies. In response, project scientists have developed a finite element numerical model of the hull in its current state in an attempt to answer these questions. This new course of action has raised a number of important questions regarding the submarine’s structural integrity. Hunley submarine (1864) have now reached a point that requires mechanical rotation of the vessel’s hull. Rachel Lance evaluated several prevailing theories for why the Confederate combat submarine HL Hunley and its 8. It is hoped that this study will both illustrate the problems associated with recording maritime artifacts and suggest further avenues for research and the development of strategies useful for better data collection.Ĭonservation efforts for the 40-foot-long H.L. Duke University Biomedical Engineering Ph.D. Moreover, we intend to address the challenges of using the 3D data to reconstruct the submarine into an accurate, color 3D model. Potentially the unluckiest boat in history or the most incompetently run, given the self-inflicted nature of each sinking - it holds a record for the most times for a submarine to sink. In particular, we would like to present a brief study of the effectiveness of optical scanning to record surface details, including issues of reflectivity, color, and surface darkness. In a short career of less than seven months, the submarine H.L. Hunley, and highlight some of the specific problems and challenges encountered when employing this technology on maritime archaeological material. This paper will discuss the use of structured-light scanning on the H.L. Hunley submarine itself, as well as other artifacts kept in a wet condition, presented the team with some unique difficulties in terms of three-dimensional documentation. Using structured-light technology on the H.L. However, maritime artifacts, or artifacts from a marine environment, are necessarily stored in water or other aqueous solutions prior to completing the conservation process. High resolution 3D surface topography and integrated photographic data were considered equally necessary, suggesting an optical-based scanning system. The choice of this particular system was determined by the interests of the archaeological team and the particular research goals of the project. In 2008, the Warren Lasch Conservation Center acquired a Breuckmann OptoTOP-HE structured-light scanning system to begin the 3D documentation of the American Civil War submarine H.L.
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