Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.7
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2290
Points per Word
0.000218
Page Count
32
Points per Page
0.015625
Description
Submarines and submersibles take part in some of the most important and secret military operations in the United States military. These stealthy underwater vehicles transport special forces groups and nuclear bombs.