Conservator Paul Mardikian shows the remnants of a torpedo casing from the spar that was at the front of the Confederate submarine H.L. Hunley during a news conference in North Charlest

 

              Conservator Paul Mardikian shows the remnants of a torpedo casing from the spar that was at the front of the Confederate submarine H.L. Hunley during a news conference in North Charlest
Conservator Paul Mardikian shows the remnants of a torpedo casing from the spar that was at the front of the Confederate submarine H.L. Hunley during a news conference in North Charleston, S.C., on Monday, Jan. 28, 2013. The discovery indicates the sub was no more than 20 feet from the Union blockade ship Housatonic when the Hunley sank it off South Carolina in 1864, becoming the first sub in history to sink an enemy warship. (AP Photo/Bruce Smith).