The Hunley: Zeroing in on what caused Civil War submarine's sinking

By Phil Gast, CNNUpdated 15th February 2014
Click to expand: Conrad Wise Chapman made this contemporary painting of the H.L. Hunley.
Click to expand: Conrad Wise Chapman made this contemporary painting of the H.L. Hunley.
courtesy Museum of the Confederacy
Click to expand: The location of the crew's remains are depicted in this digital image. They were at or near their stations, showing no signs of panic.
Click to expand: The location of the crew's remains are depicted in this digital image. They were at or near their stations, showing no signs of panic.
courtesy friends of the hunley
In 2013, researchers uncovered new evidence pertaining to the final moments of a Civil War submarine.
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Low Missouri river levels reveal the Montana, a sunken ship from 1882.