Joanne Mattern 
Engineering Wonders Submarines and Submersibles [PDF ebook] 

In Submarines and Submersibles, readers will be introduced to the engineering concepts that are involved in underwater vehicle design. This fact- and photo-filled book explains how submarine and submersibles are developed, how they work, and the different ways in which they are used. The Engineering Wonders series for grades 4-8 explores the ways engineers identify the needs to be met and/or problems to be solved and crated solutions through innovative design. Featuring 48 pages, this series takes a look at a variety of structural, technical, and transportation engineering and their applications