The Imperial German Navy’s (Kaiserliche Marine) incredible Project 50 steam-powered cruiser submarine is largely unheard of. Yet it is fascinating and, had it been built, would have been the largest submarine of World War One. Main submarine article at http://www.hisutton.com/German-WW1-St… UC-1 article http://www.hisutton.com/German-WW1-Ty…Surcouf article http://www.hisutton.com/Surcouf.html