The calculated distance (air line) between Bochum-Hordel and Wilhelmshaven is approximately 146 miles respectively 234 kilometers.
By car or train, the actual journey to Wilhelmshaven is certainly longer, as only the direct route (as the crow flies) between Bochum-Hordel and Wilhelmshaven has been calculated here.
Air line (approximately)
234 kilometers
126 nautical miles