Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. WIlhelm Bauer (December 23, 1822 - June 20, 1875) was the German inventor and engineer, who built several hand-powered submarines. WIlhelm Bauer was born in Dillingen, Germany. HIs father was a sergeant of a Bavarian cavalry regiment. BEcause of this, Wilhelm Bauer, after an apprenticeship as a wood turner, joined the military as well. WOrking as an artillery engineer he witnessed the German/Danish war for Schleswig-Holstein (1848-1851). SEeing how the German northern coast lay under the blockade by the Danish navy, Bauer quickly developed a plan to build a new kind of ship to help break the blockade. TO accomplish that, Bauer began studying hydraulics and ship construction.