Crowds lined the shores of Lake Constance as the cylinder - shaped vehicle, some 420 feet [127 m] long, flew over the water for 18 minutes.
Orang - orang berkerumun di sepanjang tepi Danau Constance seraya kapal berbentuk tabung ini, yang panjangnya sekitar 127 meter, terbang melintas di atas air selama 18 menit.