Lost artifacts
The removal of the concretion layer from the Hunley revealed more than just the submarine’s physical structure. Researchers discovered an intricate gear system that would have optimized the crew’s cranking efforts, indicating the technological ingenuity employed in the submarine’s design.
Furthermore, while the remains of the crew had previously been removed, the concretion hid additional artifacts and clues about life aboard the Hunley. Each new discovery provides valuable insights into the submarine’s operation and the conditions experienced by its crew.