Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.2
Points
4.0
Fiction/Nonfiction
Fiction
Word Count
28381
Points per Word
0.000141
Page Count
149
Points per Page
0.026846
Description
During the Revolutionary War, fourteen-year-old Nathan joins forces with his older cousin, the inventor David Bushnell, to secretly build the first submarine used in naval warfare.