Written by A. Frederick Collins with Virgil D. Collins while the U-boat was the most talked-about weapon of the Great War, this book explains how a submarine dives, steers, breathes and aims a torpedo. Between chapters on the history of undersea craft and the engines that drive them, it shows a boy how to make and work a model submarine of his own.
Hands-on popular science from the First World War years, for young engineers and anyone fond of naval history. Download the free EPUB.