Presents the history of the Civil War submarine the H.L. Hunley, including the construction, mysterious sinking, recovery, and restoration. Interest Level: 5-8 Reading Level: 8.4 ATOS Book Level: 8.2 AR Interest Level: MG AR Points: 4 AR Quiz: 85867EN Reading Counts Level: 7.8 Reading Counts Points: 8 Lexile Measure: 1060.