A famous Wal. Ex N-25 of Roald Amundsen - c/n incorrectly listed as 25 in British register. Used by Frank Courtney for transatlantic attempt, fitted with Napier Lion engines. Attempt aborted. To D-1422, fitted with BMW engines. Successful Atlantic crossing with Wolfgang von Gronau in 1930. Preserved in Münich museum. Heavily damaged by Allied bombing in 1944. Photo probably taken at Calshot. Photo from: Nationaal Archief (Netherlands)

Aircraft of the German Airline Pilot School (DVS) flown by Walter von Gronau. Von Gronau and crew flew it from Sylt to New York City in 47 hours in August 1930 via the Faroes, Iceland, Greenland and Labrador. Earlier it was N-25 of Roald Amundsen, see other picture, and G-EBQO used by Frank Courtney. The flying boat was preserved in the Deutsches Museum in Munich in 1932 but badly damaged by Allied bombing in 1944. Photo from: Finnish Heritage Agency

Delivered in 1925 and used by Roald Amundsen on an aborted North Pole flight. Seen here during trial flights on an Oslo - Kristiansand - Amsterdam - Harwich route. Flew Horten - Kiel - Friedrichshafen later in March 1925 month for resale by Dornier. Flew to New York as D-1422 in 1930 with Wolfgang von Gronau. Transferred to Deutsches Museum Munich in 1932 but damaged beyond repair by bombing in 1944. Photo from: Amsterdam City Archives