It could be one of the nation’s oldest cold case files: What happened to eight Confederate sailors aboard the CSS H.L. Hunley after it became the first submarine in history to sink an enemy warship?
Their hand-cranked sub rammed a spar with black powder into the blockade ship USS Housatonic off Charleston on a chilly winter night in 1864 then disappeared.
The Hunley’s fate has been the subject of almost 150 years of conjecture and almost a decade of scientific research since it was raised in 2000. But the submarine has been agonizingly slow surrendering her secrets.