Discover the story of the first submarine to sink a ship in a battle, and follow the investigation that took more than 130 years to track the ship on the ocean floor.
Grades 5 and up
For more on submersibles and exploring the sea, read Will Humans Go DEEP?
![Secrets of Civil War Sub](https://media.gwnews.com/images/covers/_AUTOxAUTO_fit_center-center_none/Secrets-of-Civil-War-Sub.jpg)