The NC-4 was a Curtiss NC flying boat which was designed by Glenn Curtiss and his team, and manufactured by Curtiss Aeroplane and Motor Company. In May 1919, the NC-4 became the first aircraft to fly across the Atlantic Ocean, starting in the United States and making the crossing as far as Lisbon, Portugal, in 19 days. This included time for numerous repairs and for crewmen’s rest, with stops along the way in Nova Scotia, Newfoundland, and twice in the Azores Islands. Then its flight from the Azores to Lisbon completed the first transatlantic flight between North America and Europe, and two more flights from Lisbon to northeastern Spain to Plymouth, England, completed the first flight between North America and Great Britain.
The accomplishment of the naval aviators of the NC-4 was somewhat eclipsed in minds of the public by the first nonstop transatlantic flight, which took 15 hours and 57 min and was made by the British pilots John Alcock and Arthur Whitten Brown, two weeks later. [N 1]
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