The experimental Confederate submarine, H.L. Hunley again sinks in Charleston Harbor during trials, drowning eight men

After a fatal training accident six weeks before, the experimental Confederate submarine H.L. Hunley, 40 feet long with a crew of eight using hand cranks for propulsion, was raised and had resumed its trials in Charleston Harbor for possible use against the Union blockade.  Disaster again struck, though, when the vessel failed to surface, drowning all aboard, including its designer, H.L. Hunley. (By John Osborne) 
Source Citation
Shane Mountjoy, Technology in the Civil War (New York: Infobase Publishing, 2008), 82-83. 
Date Certainty
Exact
Type
Battles/Soldiers
How to Cite This Page: "The experimental Confederate submarine, H.L. Hunley again sinks in Charleston Harbor during trials, drowning eight men," House Divided: The Civil War Research Engine at Dickinson College, https://hd.housedivided.dickinson.edu/index.php/node/41427.