Wilhelmshaven is a town in Lower Saxony, Germany. It is situated at the western coast of the Jadebusen, which is a bay of the North Sea. Population: 83,238 (2006). History Wilhelmshaven is a relatively young city by German standards. In need of a naval base for Prussia's developing fleet, Prussian king Wilhelm I founded the town in 1869. There was a castle at the place as early as 1383, the Sibetsburg; this castle was owned by pirates and destroyed in 1433 by the Hanseatic League. Four centurie… (More on Wilhelmshaven)