Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.7
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2198
Points per Word
0.000227
Page Count
48
Points per Page
0.010417
Description
Briefly describes the development, weapons, and use of river patrol boats from the Revolutionary War days through the Vietnam War.