The NC-4 was the first aircraft to fly across the Atlantic Ocean. In May of 1919 the NC-4, a United States Navy flying boat, made the crossing over 19 days with multiple stops along the way.
The mission was the result of planning that began during World War I, when Allied shipping was threatened by submarine warfare. Designs were started for an airplane capable of flying from the United States to Europe on its own power.
The planes were not finished and tested until after the war was over. The US Navy decided to try a demonstration of trans-Atlantic flight nonetheless.
This feat was shortly eclipsed by the non-stop Transatlantic flight of Alcock and Brown in a Vickers Vimy when they flew from Newfoundland to Ireland on June 14/15 1919.
The crew of the NC-4 was Albert Cushing Read, commander/navigator; Walter Hinton and Elmer F. Stone, pilots, James L. Breese and Eugene S Rhoads, flight engineers, and Herbert C Rodd, radio operator. Initially E.H. Howard was to go as a flight engineer, but Howard lost a hand in a propeller accident at the start of the mission, and was replaced by Rhoads.
To honor the first transatlantic cross, in 1929 the United States Navy created a special military decoration known as the NC-4 Medal.
The NC-4 airplane is now preserved in the Naval Aviation Museum in Pensacola, Florida.