Via Jonathan
The first submarine to down an enemy ship was sunk itself after its crew failed to release an emergency weight to help it resurface.
Crew aboard the
Confederate vessel HL Hunley did not disconnect the 1,000lb keel blocks
to help it rapidly resurface, resulting in the sub being trapped
underwater and the men dying from lack of oxygen.
Scientists
who removed the corrosion, silt and shells from the boat found the
levers all locked in their regular position, solving a mystery dating
back to 1864.
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