In a seaplane from Friedrichshafen via Amsterdam to Hamburg.
Engineer Heinrich Dahm did a great job on a water biplane built by Flugzeugbau Friedrichshafen FF 9 with 135 hp. N.A.G. engine, carried out with his mechanic Krahmer.
On September 20, 1913 at 4:30 a.m., Dahm started from Friedrichshafen, but lost the orientation near Schaffhausen due to the dense fog and ended up splashing down on the Rhine. As a result of this loss of time, he returned to Manzell. On the same day, at 10:00 a.m., he took off for the second time, landed at Kehl at 1:40 p.m. to get petrol and oil and take off again immediately. At 7:30 p.m. Dahm reached Cologne, where he went down on the Rhine to the great enthusiasm of the audience.
On September 22 at 9:45 am, Dahm departed Cologne again and reached Amsterdam at 1:50 pm, from where he continued his flight at 3:00 pm. he passed the Zuidersee, flew over Borkum at 6:00 pm and landed near Emden at 6:45 pm. The onward flight from Emden took place on 23 September at 9:30 am.
At 11:30 am Cuxhaven was overflown and at 12:45 Dahm went down near Altona on the Elbe, where the plane capsized on landing in calm water and was badly damaged. At the same time, Dahm and his companion were injured.