"A tugboat has many jobs, keeping it busy from morning until night. This book shows how such a little boat can do big jobs. Includes a glossary at the back"--Provided by publisher. Interest Level: K-3 Reading Level: 2.2 ATOS Book Level: 1.9 AR Interest Level: LG AR Points: .5 AR Quiz: 166019EN Reading Counts Level: 2.2 Reading Counts Points: 1 Lexile Measure: 540 Lexile Code: AD (Adult Directed) Guided Reading Level: G.